Motor oil classifications. Deciphering the classification of oil by API What kind of oil api service sg

The oil producer is the Obninskorgsintez company (Russia). The company has a scientific laboratory that allows you to control the quality of manufactured products at every stage and to develop new high-tech formulations. Manufacturing and quality assessment are carried out using modern high-tech equipment.

Product Description

SINTEC Super SAE 10W40 API SG / CD from semi-synthetics, manufactured using high quality standard (base) oils and a specially selected set of additives. Oil with extended service life, reduced oil waste, improved anti-corrosion and detergent properties.

The oil has increased stability. For semi-synthetic oils, combined bases are used, a mixture of straight-run mineral oils and a hydrocracking base.

The lubricant includes ZDDP antiwear additives based on zinc and phosphorus. A lot of calcium is a cleaning additive.

Application area

Sintec 10W-40 is considered all-season. The lubricant is used in diesel and gasoline engines of the latest cargo and passenger cars of foreign and domestic brands.

Lovers of domestic cars with standard engines leave excellent reviews about the oil. This product is very suitable for non-powered engines with a carburetor power system or mono injection.

Plastic canister 4 liters

Specifications

Sintec 10v40 oil characteristics:

IndexTest Method (ASTM)Value / Unit
1 Viscosity characteristics
- Viscosity gradeSAE J300SAE 10W-40
- API oil classification SG / CD
- Density at 20 ° СGOST 3900
ASTM D 4052
0.8743 g / cm³
- Viscosity indexGOST 25371
153
- Kinematic viscosity at 100 ° CGOST 33 or GOST R 53708 or ASTM D 44514.64 mm2 / s
- Alkaline numberGOST 113627.7 mg KOH / g
- Sulphated ashGOST 12417 or ASTM D 8741.14%
- Evaporation 11.9%
2 Temperature characteristics
- Flash point in an open crucible, ° СGOST 4333
ASTM D 92
218 ° C
- Pour point, ° СGOST 20287
ASTM D 97
-38 ° C

Approvals, approvals and specifications

Meet the requirements of the specifications:

  • API SG / CD (or earlier specifications).

Plastic canisters SINTOIL 1 and 5 liters and SINTEC 4 liters

Release form and articles

  1. 801893 SINTEC Super SAE 10W-40 API SG / CD 1L
  2. 801894 SINTEC Super SAE 10W-40 API SG / CD 4L
  3. 801887 SINTEC Super SAE 10W-40 API SG / CD 4L
  4. 801895 SINTEC Super SAE 10W-40 API SG / CD 5L
  5. 801888 SINTEC Super SAE 10W-40 API SG / CD 5L
  6. 963244 SINTEC Super SAE 10W-40 API SG / CD 216.5L

Sintoil Super, is a 100% analogue of Sintek, the oils are completely the same in characteristics, but the labels on the cans and the article numbers for the order are different:

  1. 80025 SINTOIL Super SAE 10W-40 API SG / CD 1L
  2. 944211 SINTOIL Super SAE 10W-40 API SG / CD 4L
  3. 940211 SINTOIL Super SAE 10W-40 API SG / CD 5L
  4. 841865 SINTOIL Super SAE 10W-40 API SG / CD 216.5L

Graph of viscosity of oils versus ambient temperature

How 10W40 stands for

For car owners, the following engine oil labeling is important:

  • 10 - the minimum temperature value (in the specific case -30 ° С), at which the crankshaft is still cranked by the electric starter at start-up. At temperatures below -30 ° C, the grease becomes so thick that the starter cannot turn the crankshaft. In this case, the standard operating temperature is considered to be at least -25 ° C.
  • The W mark indicates that the fluidity of the oil is suitable for winter use.
  • Decoding the number 40 indicates the maximum ambient temperature at which the lubricant properties do not degrade in a heated engine. In this case, the indicator coincides with the temperature: + 40 ° C.

Advantages and disadvantages

The main advantages of Sintec 10W-40:

  1. stability of viscosity-temperature parameters;
  2. high dispersing and antioxidant properties;
  3. easy start of the motor at subzero temperatures;
  4. reliable protection of the motor from rust and wear in intensive operating conditions, subject to the recommended shift periods;
  5. protection of the motor from the formation of carbon deposits;
  6. long period of work. This advantage of Sintec oils is highlighted by almost all motorists. Even inexpensive oils almost always develop a mileage schedule between regular maintenance;
  7. reduced consumption of grease for waste;
  8. excellent anti-corrosion properties;

The disadvantage is the presence of a dark coating (according to reviews of some users).

How to distinguish a fake

A good advantage is the fact that Sintec Super oil counterfeiting does not occur on a large scale. This is completely unprofitable for criminals, since the cost of the original is small and not very beneficial for the production process.

It is impossible to run into industrial counterfeit products. But to purchase a homemade fake, when the original product is drained from the canister, and a cheap mineral water is filled in instead, it is quite possible, in these cases it is worthwhile to carefully study the canister before buying, check the integrity of the cork, protective ring, labels and the container itself.

By purchasing lubricants,

pay attention to the stated specifications and

container tolerances.

Example

SAE 5W-20

ACEA A5 / B5

API SN / SM, SL / CF, CF-2

ILSAC GF-5 / C-3

GM-LL-A-025 / GM-LL-B-025

VW 502.00 / 505.00, MB 229.31

BMW Longlife-04

Viscosity classification bySAE

SAE- American Society of Automotive Engineers, which assigns oils a viscosity grade according to the scale developed by it. The most common multi-grade dual-index oils such as SAE0 W-30, 0 W-40, 5 W-30, 5 W-40 other. The smaller the value to the left with the abbreviation W , the higher the oil flow property at low temperatures. The greater the value to the right without abbreviation W, the higher the viscosity of the oil at high temperatures. The oil change is made taking into account not only its type specified by the vehicle manufacturer, but also the ambient temperature, conditions of its use and other factors. For instance: 5 W-30 (engine oil), 85W-90 (transmission oil).

ViscositySAE and the ambient temperature required when starting the engine

Engine oil Transmission oil

When choosing a viscosity grade of engine oil, you should be guided by the recommendations of the manufacturer of a particular engine. These recommendations are based on the design features of the engine - the degree of oil loading, the hydrodynamic resistance of the oil system, the performance of the oil pump, the maximum oil temperatures in different zones of the engine depending on the ambient temperature, the engine is equipped with a catalytic diesel particulate filter (CDPF)

Purpose and quality

Oil quality is a complex of properties that is necessary for the oil to perform as intended. Some properties, such as viscosity, are basic for all oils, regardless of their purpose, while others are necessary only under certain conditions of use and in each case are characterized by separate quality indicators.

To facilitate the selection of oil of the required quality for a specific engine type and operating conditions, classification systems have been created. In each system, engine oils are subdivided into ranks and categories based on quality level and purpose. These ranks and categories were created at the initiative of international organizations of oil refining companies and car manufacturers, taking into account the design features of various types of engines and their operating conditions. Purpose and quality levels are the basis of the range of oils. Due to the difference in designs and operating conditions, there are currently several systems for the classification of engine oils - API/ ILSAC , JASO, ACEAand GOST (for the CIS countries).

The US Defense Department and the largest car manufacturers put forward additional requirements for the quality of engine oils. Thus, along with generally accepted classification systems, there are also requirements (specifications) of car manufacturers.

Classification systemAPI

API - The American Petroleum Institute, which assigns quality classes to oils according to the tests they carry out. The quality class is indicated on the label with two letters for gasoline engines ( SM, SN ), letters and numbers for diesel engines ( CI-4 Plus, CJ-4 ). The higher the alphabetical order of the second letter in the designation, the higher the oil grade. Besides, API assigns to oils with viscosity 0 W-30, 5 W-30, 5 W-20 energy saving index, for example ILSACCF-5.

APIS consists of the quality categories of motor oils for gasoline engines, in chronological order. For each new generation, an additional letter is assigned alphabetically : APISA, APISB, APISC, APISD, APISE, APISF, APISG, APISH, APISJ, APISM and APISN. Categories API SA , API SB, APISC, APISD, APISE, APISF, APISG, APISJ today they are recognized as invalid, as obsolete, but in some countries oils of these categories are still produced, category APISH is "conditionally effective" and can only be used as an additional, for example APICG-4/ SH;

API STANDARD FOR ENGINE OIL FOR PETROL ENGINES
CATEGORY STATUS DESCRIPTION
SN EXISTING Introduced October 2010 for 2011 and older vehicles. Engine oil in this category provides better protection against high temperature piston deposits, reduced low temperature deposits (gums), and increased seal compatibility. The API SN Resource Conserving category combines API SN performance with improved fuel efficiency, protection of turbocharger parts, emission control compatibility, and additional engine protection with ethanol fuels up to E85. Thus, this category can be equated to ILSAC GF-5.
SM EXISTING For cars manufactured in 2010 and older.
SL EXISTING For cars made in 2004 and older.
SJ EXISTING For cars manufactured in 2001 and older.
SH Outdated
SG Outdated
SF Outdated
SE Outdated ATTENTION! Should not be used in gasoline engines of vehicles manufactured after 1979.
SD Outdated ATTENTION! Should not be used in gasoline engines of vehicles manufactured after 1971. Use in more modern engines may result in performance degradation or breakdown.
SC Outdated ATTENTION! Should not be used in gasoline engines of vehicles manufactured after 1967. Use in more modern engines may result in performance degradation or breakdown.
SB Outdated ATTENTION! Should not be used in gasoline engines of vehicles manufactured after 1951. Use in more modern engines may result in performance degradation or breakdown.
SA Outdated ATTENTION! Does not contain additives. Should not be used in gasoline engines of cars built after 1930. Use in more modern engines may result in performance degradation or breakdown.

APIFROM consists of categories of quality and purpose of oils for diesel engines, going in chronological order. For each new generation, an additional letter is assigned alphabetically : APICA, APICB, APICC, APICD, APICE, APISF, APICF-2, APICF-4, APICG-4, APICI-4 and APICJ-4. Categories APICA, APICB, APICC, APICD today they are recognized as invalid, as obsolete, but in some countries oils of these categories are still produced;

API STANDARD FOR ENGINE OIL FOR DIESEL ENGINES
CATEGORY STATUS DESCRIPTION
CJ-4 EXISTING For high-speed, four-stroke diesel engines from MY 2010, meeting the emission standards for road vehicles and Tier 4 for off-road vehicles, as well as for previous diesel engines. Oils in this category are designed for use in diesel engines with a sulfur content of up to 500 ppm (0.05% by weight). However, using fuels with a sulfur content greater than 15 ppm (0.0015% w / w) may reduce the life of the exhaust aftertreatment system and shorten the oil change interval. CJ-4 oils are particularly effective in maintaining the durability of the emission control system of diesel engines that use particulate filters and other advanced aftertreatment systems. Provides optimal protection against catalytic converter fouling, particulate filter plugging, engine wear, piston deposits, particulate and oxidative thickening, shear and foaming viscosity loss, and low and high temperature stability. API CJ-4 oil exceeds the performance properties of API CI-4 oils (including CI-4 PLUS), CI-4, CH-4, CG-4 and CF-4, and can serve as a full replacement. When using CJ-4 oil in combination with fuels with a sulfur content greater than 15 ppm, check with the engine manufacturer for oil change intervals.
CI-4 EXISTING Introduced in 2002. For high-speed, four-stroke engines meeting the 2002 exhaust emission standards. CI-4 is designed to maintain the durability of engines with an exhaust gas recirculation (EGR) system and is intended for use with diesel fuels with a sulfur content of less than 0.5% by weight. Can be used in place of CD, CE, CF-4, CG-4 and CH-4 oils. Due to their performance properties, some CI-4 oils can qualify for the CI-4 PLUS category.
CH-4 EXISTING Introduced in 1998. For high-speed, four-stroke engines meeting the 1998 emission standards. Oil of category CH-4 is intended for use with diesel fuel in which the sulfur content does not exceed 0.5% by mass. Can be used in place of CD, CE, CF-4 and CG-4 oils.
CG-4 Outdated Introduced in 1995. For highly loaded, high-speed four-stroke engines operating on fuels with a sulfur content not exceeding 0.5% by weight. CG-4 oil is required for engines that meet the 1994 exhaust emission standards. Can be used in place of CD, CE and CF-4 oils.
CF-4 Outdated Introduced in 1990. For high-speed, naturally aspirated and supercharged four-stroke engines. Can be used in place of CD and CE oils.
CF-2 Outdated Introduced in 1994. For heavily loaded two-stroke engines. Can be used in place of CD-II oils.
CF Outdated Introduced in 1994. For diesel engines with two-chamber combustion chambers (indirect injection) and others installed on off-road equipment, including engines that run on fuels with a sulfur content of more than 0.5% by mass. Can be used in place of CD oils.
CE Outdated Introduced in 1985. For high-speed, naturally aspirated and supercharged four-stroke engines. Can be used instead of CC and CD.
CD-II Outdated Introduced in 1985. For two-stroke engines.
CD Outdated Introduced in 1955. For some naturally aspirated and supercharged engines.
CC Outdated ATTENTION! Should not be used in diesel engines manufactured after 1990.
CB Outdated ATTENTION! Should not be used in diesel engines manufactured after 1961.
CA Outdated ATTENTION! Should not be used in diesel engines manufactured after 1959.


APIEFROM (ILSAC) - energy saving oils (Resource Conserving). A new range of high quality oils, consisting of low viscosity, low flow oils that reduce fuel consumption in gasoline engine tests.

A decrease in oil viscosity can provide fuel savings in a warm engine of 0.6-5.5% (with a decrease in high-temperature viscosity), and in a cold one - 1.0-6.5% (with a decrease in low-temperature viscosity). With the optimal combination of engine and gear oil, fuel savings of 2.7-10.9% can be achieved. The newest API certified oil categories, when compliant with ILSAC requirements, are designated the API Certification Mark, the so-called Starburst mark. This mark can only be assigned to energy-saving, highly volatile oils of the highest quality level, with viscosity SAE 0W - .., 5W- .. and 10W -...

The ILSAC GF Series Oil Requirements System is an integral part of the American Oils Quality Assurance API (EOLCS) system. ILSAC Class GF-3, fuel economy tested, meets API Class SM classification; ILSAC class GF-4 conforms to API class SM classification. For example: API SN Pass Fuel Economy Test \u003d ILSAC GF-5.

ILSAC STANDARD FOR PASSENGER CAR ENGINE OIL
EDITION STATUS DESCRIPTION
GF-5 EXISTING Introduced October 2010 for 2011 and older vehicles. GF-5 engine oil provides better protection against high temperature deposits on engine pistons and turbocharger parts, reduced low temperature deposits (gums), reduced fuel consumption, improved compatibility with the emission control system, enhanced compatibility with sealing parts, as well as additional engine protection when using fuels containing ethanol up to E85.
GF-4 DEPRECATED Valid until September 30, 2011. Use GF-5 oil instead of GF-4.
GF-3 DEPRECATED Use GF-5 oil instead of GF-3.
GF-2 DEPRECATED Use GF-5 oil instead of GF-2.
GF-1 DEPRECATED Use GF-5 oil instead of GF-1.

Universal oils for gasoline and diesel engines are designated by two symbols of the respective categories: the first is the main one, and the second indicates the possibility of using this oil for other types of engines. For example: API CG-4 / SH oil optimized for use in diesel engines, but it can also be used in gasoline engines for which an oil of API SH category or lower is prescribed (SG, SF, SE, etc.).

Attention: each of the subsequent quality standards surpasses the previous one, therefore the newest quality standards surpass all the previous ones. For example, SN oils can be used in place of all classes for gasoline engines.

SignsAPI

Oils that meet the requirements of the current quality categories and have passed official API-SAE tests have a graphic round sign (donut mark) on their labels - "API Service Symbol", which indicates the SAE viscosity grade, quality category and API assignments and possible energy savings.


ACEA - European Association of Automobile Manufacturers. If these letters appear on the label, then the oil is suitable for use in engines of European cars. Classes ACEA also divided into diesel and gasoline.

AUTOMAKER APPROVALS - some car companies such as Porshe, Mercedes- Benz, Bmw, VW, Ford, make additional demands on oils for engine protection, fuel saving, extended service life, etc. You can find information on the required approval and the required intervals between oil changes in your vehicle's service book.

Oil quality - this is a set of properties that is necessary for the oil to work as intended. To facilitate the selection of the required oil quality for a specific engine type and operating conditions, an API engine oil classification system has been created.

This classification was created and is being improved in collaboration with API (American Petroleum Institute), ASTM (American Society for Testing and Materials) and SAE. It determines the limits of various parameters (in particular, piston cleanliness, piston ring wear, etc.) using various test motors.

According to the API system, 2 operational categories of purpose and quality are established

  1. For gasoline engines with classes SE, SF, SG, SH, SJ, SL, SM, SN.
  2. For diesel engines with classes CC, CD, CE, CF, CG, CH, CI, CJ.

Multipurpose oils for gasoline and diesel engines are indicated by two symbols of the respective categories: the first symbol is the main one, and the second indicates the possibility of using this oil for a different type of engine. For example, API CG-4 / SH is an oil optimized for use in diesel engines, but it can also be used in gasoline engines for which an API SH or lower oil is prescribed (SG, SF, SE, etc.).

Categories of oils for gasoline engines of passenger cars

Oil group

Years of car production

SN

The current Engine oil in this category provides better protection against high temperature piston deposits, reduced low temperature deposits (gums), and increased seal compatibility. The API SN Resource Conserving category combines API SN performance with improved fuel efficiency, protection of turbocharger parts, emission control compatibility, and additional engine protection with ethanol fuels up to E85. Thus, this category can be equated to ILSAC GF-5 Introduced October 2010 for 2011 and older vehicles.

SM

The current Introduced November 2004. For cars made in 2004 and older

SL

The current API planned to develop the PS-06 project as the next API SK category, but one Korean motor oil supplier uses the abbreviation “SK” as part of its corporate name. To avoid possible confusion, the letter “K” will be omitted for the next category “S”.
- stability of energy saving properties;
- reduced volatility;
- extended drain intervals;
For cars made in 2001 and older

SJ

The current The category was approved on 11/06/1995, licenses were issued from 10/15/1996. Automotive oils in this category are designed for all currently used gasoline engines and completely replace oils of all previously existing categories in older engine models. Maximum level of performance properties. Possibility of certification in the energy efficiency category API SJ / EC. since 1996

SH

Obsolete Licensed category approved in 1992. Today the category is conditionally valid and can only be certified as additional to the API C categories (for example, API AF-4 / SH). According to the requirements, it corresponds to the ILSAC GF-1 category, but without mandatory energy saving. Automotive oils of this category are intended for gasoline engines of 1996 and older models. In the course of certification for energy saving, depending on the degree of fuel economy, the categories API SH / EC and API SH / ECII were assigned. since 1993

SG

Obsolete Licensed category approved in 1988. The issuance of licenses was terminated at the end of 1995. Automotive oils are designed for engines of 1993 and older models. Fuel - unleaded gasoline with oxygenates. Meets the requirements of API CC and API CD automotive oils for diesel engines. They have higher thermal and antioxidant stability, improved antiwear properties, and reduced tendency to form deposits and sludge.
API SG automotive oils replace API SF, SE, API SF / CC and API SE / CC oils.
1989-1993

SF

Obsolete Automotive oils of this category are intended for engines of 1988 and older models. Fuel is leaded gasoline. They are more effective than the previous categories, antioxidant, antiwear, anti-corrosion properties and have less tendency to form high and low temperature deposits and slag.
API SF automotive oils replace API SC, API SD and API SE oils in older engines.
1981-1988

SE

Obsolete Should not be used in gasoline engines of vehicles manufactured after 1979. 1972-1980

SD

Obsolete Should not be used in gasoline engines of vehicles manufactured after 1971. Use in more modern engines may result in poor performance or breakdown. 1968-1971

SC

Obsolete Should not be used in gasoline engines of vehicles manufactured after 1967. Use in more modern engines can result in poor performance or breakdown. 1964-1967

SB

Obsolete Should not be used in gasoline engines of vehicles manufactured after 1951. Use in more modern engines may result in poor performance or breakdown. -

SA

Obsolete Does not contain additives. Should not be used in gasoline engines of vehicles manufactured after 1930. Use in more modern engines can result in poor performance or breakdown. -

Categories of oils for diesel engines of commercial vehicles

Oil group

CJ-4

The current Introduced in 2006. For high-speed four-stroke engines designed to meet 2007 highway emission standards. CJ-4 oils allow the use of fuels with a sulfur content up to 500 ppm (0.05% by weight). However, handling fuels with a sulfur content exceeding 15 ppm (0.0015% w / w) may affect the performance of the exhaust aftertreatment systems and / or oil change intervals.
CJ-4 oils are recommended for engines equipped with Diesel Particulate Filters and other exhaust gas treatment systems.
Oils with the CJ-4 specification exceed the performance properties of CI-4, CI-4 Plus, CH-4, CG-4, CF-4 and can be used in engines for which oils of these classes are recommended.

СI-4

The current Introduced in 2002. For high-speed four-stroke engines designed to meet the 2002 exhaust emission regulations. CI-4 oils allow the use of fuels with a sulfur content of up to 0.5% by weight, and are also used in engines with an exhaust gas recirculation (EGR) system. Replaces CD, CE, CF-4, CG 4 and CH-4 oils.
In 2004, an additional category API CI-4 PLUS was introduced. The requirements for soot formation, deposits, viscosity indicators, limiting the TBN value have been tightened.

CH-4

The current Introduced in 1998. For high-speed, four-stroke engines meeting US exhaust emission requirements since 1998. CH-4 oils allow the use of fuels with a sulfur content of up to 0.5% by weight. Can be used in place of CD, CE, CF-4 and CG-4 oils.

CG-4

Obsolete Introduced in 1995. For engines of high-speed diesel vehicles operating on fuels with a sulfur content of less than 0.5%. CG-4 oils for engines meeting the exhaust gas emission requirements introduced in the USA since 1994. Replaces CD, CE and CF-4 oils.

CF-4

Obsolete Introduced in 1990. For high-speed four-stroke diesel engines with and without turbocharging. Can be used instead of CD and CE oils.

CF-2

Obsolete Introduced in 1994. Improved performance, used instead of CD-II for two-stroke engines

CF

Obsolete Introduced in 1994. For diesel engines with two-chamber combustion chambers (indirect injection) and others installed on off-road equipment, including engines that run on fuels with a sulfur content of more than 0.5% by mass. Can be used in place of CD oils.

CE

Obsolete Introduced in 1985. For high-speed, naturally aspirated and supercharged four-stroke engines. Can be used instead of CC and CD.

CD-II

Obsolete Introduced in 1985. For two-stroke engines.

CD

Obsolete Introduced in 1955. For some naturally aspirated and supercharged engines.

CC

Obsolete Should not be used in diesel engines manufactured after 1990.

СB

Obsolete Should not be used in diesel engines manufactured after 1961.

CA

Obsolete Do not use in diesel engines manufactured after 1959.

Classification of motor oils according to application conditions and performance levels by the American Petroleum Institute (API).

According to the API classification, engine oils are divided into two categories: "S" (Service) and "C" (Commercial).

S (Service) - consists of the quality categories of motor oils for gasoline engines in chronological order. For each new generation, an additional letter is assigned in alphabetical order: API SA, API SB, API SC, API SD, API SE, API SF, API SG, API SH and API SJ (category SI - the API is deliberately omitted to avoid confusion with the International system measures).

Categories API SA, API SB, API SC, API SD, API SE, API SF, API SG are currently invalidated as obsolete, but in some countries oils of these categories are still being produced, the API SH category is "conditionally valid" and may used only as an option, for example API CG-4 / SH.

Class SL was introduced in 2001 and differs from SJ in significantly better antioxidant, antiwear, antifoam properties, as well as less volatility.

C (Commercial) - consists of the categories of quality and purpose of oils for diesel engines, in chronological order. For each new generation, an additional letter is assigned alphabetically: API CA, API СB, API СC, API СD, API СD-II, API CE, API CF, API CF-2, API CF-4, API CG-4 and API CH -4.

Categories API СA, API СB, API СC, API СD, API СD-II are currently invalidated as obsolete, but in some countries oils of these categories are still produced.

The classes of oils that indicate the field of application are denoted by letters of the Latin alphabet in ascending order behind the category designation: "Service" (SA, SB, SC, SD, SE, SF, SG, SH, SJ, SL, SM, SN), "Commercial" (CA, CB, CC, CD, CD +, CD-II, CE, CF-4, CF-2, CG-4, CH-4, CI-4)... The numbers for the designations of the classes CDII, CF-4, CF-2, CG-4 give additional information about the applicability of oils of this class in 2-stroke or 4-stroke engines. The introduction of each new class was due to the tightening of requirements for oils, in particular, caused by environmental legislation, the increased use of turbocharged engines, and exhaust gas recirculation.

To indicate universal oils, i.e. such that can be used for the lubrication of gasoline and diesel engines, double marking is adopted, for example SF / CC, CF-4 / SH, etc.

For gasoline engines - oil classes on the S scale

Oil group Years of car production Qualitative indicators
SM

Introduced November 2004.

Technology development trends are aimed at improving their environmental safety, increasing maintenance intervals while maintaining operational reliability. Naturally, this makes its own adjustments to the process of improving engines, and is reflected in the qualities of lubricants. Following these trends, in November 2004, the API classification introduced a class for motor oils for gasoline engines - SM, which, in comparison with SL, implies increased requirements for lubricants with respect to oxidation resistance, protection against deposits, wear, etc. Since October 2006, the category for CJ-4 class diesel oils has also been added.

since 2004 -
SL

(Acting). API planned to develop PS-06 as the next API SK category, but one Korean motor oil supplier uses the abbreviation "SK" as part of its corporate name. To avoid possible confusion, the letter "K" will be omitted for the next category "S".

  • - stability of energy saving properties;
  • - reduced volatility;
  • - extended drain intervals.
since 2001 -
SJ (Acting). The category was approved on 11/06/1995, licenses were issued from 10/15/1996. Automotive oils in this category are designed for all currently used gasoline engines and completely replace oils of all previously existing categories in older engine models. Maximum level of performance properties. Possibility of certification for energy efficiency category API SJ / EC. since 1996 -
SH (Conditionally valid). Licensed category approved in 1992. Today the category is conditionally valid and can only be certified as additional to the API C categories (for example, API AF-4 / SH). According to the requirements, it corresponds to the ILSAC GF-1 category, but without mandatory energy saving. Automotive oils of this category are intended for gasoline engines of 1996 and older models. During the certification for energy saving, depending on the degree of fuel economy, the categories API SH / EC and API SH / ECII were assigned. since 1993 higher for models from 1995 onwards
SG

Licensed category approved in 1988. The issuance of licenses was terminated at the end of 1995. Automotive oils are designed for 1993 and older engines. Fuel - unleaded gasoline with oxygenates. Meets the requirements of API CC and API CD automotive diesel oils. They have higher thermal and antioxidant stability, improved antiwear properties, reduced tendency to form deposits and sludge.

API SG automotive oils replace API SF, SE, API SF / CC and API SE / CC oils.

1989-1993
SF

Automotive oils of this category are intended for engines of 1988 and older models. Fuel is leaded gasoline. They are more effective than the previous categories, antioxidant, antiwear, anti-corrosion properties and have less tendency to form high and low temperature deposits and slag.

API SF automotive oils replace API SC, API SD and API SE oils in older engines.

1981-1988
SE High performance engines operating in tough conditions. 1972-1980 higher
SD Medium power engines operating in severe conditions. 1968-1971 the average
SC Engines operating with increased loads. 1964-1967 -
SB Motors operating at moderate loads are used only at the request of the manufacturer. - -
SA Light duty engines are used only when requested by the manufacturer. - -

For diesel engines - oil classes on the C scale

Oil group Recommended area of \u200b\u200bapplication Years of car production Qualitative indicators
CJ-4

Introduced in 2006. For high-speed four-stroke engines designed to meet 2007 highway emission standards. CJ-4 oils allow the use of fuels with a sulfur content up to 500 ppm (0.05% by weight). However, handling fuels with a sulfur content exceeding 15 ppm (0.0015% w / w) may affect the performance of the exhaust aftertreatment systems and / or oil change intervals.

Oils with the CJ-4 specification exceed the performance properties of CI-4, CI-4 Plus, CH-4, CG-4, CF-4 and can be used in engines for which oils of these classes are recommended.

since 2006 -
СI-4

Introduced in 2002. For high-speed four-stroke engines designed to meet the 2002 exhaust emission regulations. CI-4 oils allow the use of fuels with a sulfur content of up to 0.5% by weight, and are also used in engines with an exhaust gas recirculation (EGR) system. Replaces CD, CE, CF-4, CG 4 and CH-4 oils.

since 2002 -
CH-4 Introduced in 1998. For high-speed, four-stroke engines meeting US exhaust emission requirements since 1998. CH-4 oils allow the use of fuels with a sulfur content of up to 0.5% by weight. Can be used in place of CD, CE, CF-4 and CG-4 oils. since 1998 -
CG-4 Introduced in 1995. For engines of high-speed diesel vehicles operating on fuels with a sulfur content of less than 0.5%. CG-4 oils for engines meeting the exhaust gas emission requirements introduced in the USA since 1994. Replaces oils CD, CE and CF-4 categories. from 1995 higher for models since 1995
CF-4 Introduced in 1990. For high-speed four-stroke diesel engines with and without turbocharging. Can be used instead of CD and CE oils. since 1990 higher for four-stroke engines
CF-2 Introduced in 1994. Improved performance, used instead of CD-II for two-stroke engines. since 1994 higher for two-stroke engines
CF Introduced in 1994. Oils for off-road equipment, split injection engines, including those operating on fuels with a sulfur content of 0.5% by weight and above. Replaces CD oils. since 1994 -
CE High performance, advanced high turbocharged engines operating in severe conditions can be used in place of CC and CD oils. from 1987 higher
CD A class of oils for high-speed diesel engines with turbocharging and high power density, operating at high speeds and at high pressures and requiring increased anti-ionic properties and prevention of carbon deposits. from 1955 the average
CC High performance engines (including moderately supercharged) operating in difficult conditions. since 1961 low
CB Naturally aspirated medium-boost engines operating at high loads on sour fuel. 1949-1960 -
CA Engines running at moderate loads on low-sulfur fuels. 1940-1950 -

The very essence of engine oil in the engine is to prevent overheating of moving parts and, as a result, premature wear. If the engine oil is selected correctly, the functions are fulfilled and its stable oil film does not allow excessive friction - the power unit will last a long time and without breakdowns.

It is accepted to consider operating temperature of the engine t ° about 90 degrees... But if you look at it, then this is the temperature of the antifreeze, and in the engine it can reach 150 degrees. It all depends on the type of engine and the driver's driving style.

One of the main conditions for stable operation of the power unit is the correct viscosity.

If the selection was correct, the engine oil is guaranteed to remain on the surface of the rubbing elements, regardless of its temperature.

The viscosity value is indicated most often in two numbers through W(eg 10 W 40 )

API classification for engine oils on the S scale

To indicate that the oil belongs to gasoline, it was customary to put the letter at the beginning of the class S (i.e Service). It is followed by letters in alphabetical order, which characterizes the relevance of the engine oil class .

the category was introduced in 2010. Motor oils have the lowest possible phosphorus content, which makes it possible to use the current emission filtration systems, as well as a high level of energy saving. Regardless of its high temperature fluidity, API SN can be classified as C2, C3 and C4 according to CEA guidelines.

API SM

oils in this category are distinguished by their increased resistance to corrosion and oxidation in comparison with the previous classes. The API SM category is often found accompanied by ILSAC with energy saving properties. Oil may be used if one of the previous categories is recommended.

API SL

the category is valid to this day. Note that in the sequence of letters after the S in the categories, the letter K (i.e. SK) is missing. This was done deliberately due to the fact that one of the Korean oil trading organizations uses this combination of letters in their corporate name. API SL is superior in properties to the previous categories.

SJ API

this category is valid to this day. Agreed in 1996 Exceeds all previously accepted tolerances. They are used for cars, jeeps, vans and light trucks. There is a possibility of certification for the class of oils with energy saving properties EC.

API SH

oils of this class are oriented to gasoline engines produced after 1996. Today, the possibility of using this licensed category is possible, but subject to the addition of another API category (for example SH / EC).

API SG

focused on vehicles manufactured after 1989. Can be used in all vehicles except heavily loaded vehicles. Has higher performance properties compared to the previous approval. Excellent protection against deposits in high temperature environments. This category is considered obsolete today. Leaded petrol is allowed.

API SF

an outdated class, which implies car models created after 1988, more or less viable antioxidant, anti-corrosion and extreme pressure additives have already been used. Added detergent properties. Fuel is leaded gasoline.

API SE

obsolete class, created for high-powered engines developed (from 1972 - 80)

API SD

obsolete class, designed for loaded forced vehicles (from 1968 - 71)

API SC

obsolete class, developed (from 1964 - 67) for loaded vehicles of that time.

API SB

the use of such oil can only be found subject to the requirements of the automaker. It is used in light-duty vehicles.

API SA

tolerance implies the ability to use fuel with a low sulfur content also in unloaded engines of light vehicles