Guidelines to help you
get more from your
engine oil.
Refer to your owner’s manual for
type of oil to use.
Follow manufacturer’s oil
change recommendations.
Use only the recommended
API category: “S” for gasoline engines;
“C” for diesel engines.
Select the proper SAE oil
viscosity grade.
If you find it necessary to mix
brands of oil, use the same
viscosity grade and API
service category to maintain
performance.
Properly dispose of used oil.
Learn more about recycling
used oil on the web at
www.recycleoil.org. Go to
www.earth911.org for used
oil collection center locations.
Look for the API
Certification Marks
every time you buy
engine oil.
Ask for API-licensed oil
whenever you have
your oil changed.
 
The API Certification Mark, also known as the “Starburst”

An oil displaying this mark meets the current engine protection standard and fuel economy requirements of the International Lubricant Standardization and Approval Committee (ILSAC), a joint effort of U.S. and Japanese automobile manufacturers. Most automobile manufacturers recommend oils that carry the API Certification Mark.


API’s Service Symbol and Certification Mark identify quality engine oils for gasolineand diesel-powered vehicles. Oils displaying these marks meet performance requirements set by U.S. and international vehicle and engine manufacturers and the lubricant industry. More than 500 companies worldwide participate in this voluntary program, which is backed by a marketplace sampling and testing program.



The API Service Symbol, also known as the “Donut”

1. Performance Level: Gasoline engine oil categories (for cars, vans, and light trucks with gasoline engines): Oils designed for gasoline-engine service fall under API’s “S” (Service) categories. See inside for descriptions of current and obsolete API service categories. Diesel engine oil categories (for heavy-duty trucks and vehicles with diesel engines): Oils designed for diesel-engine service fall under API’s “C” (Commercial) categories. See inside for descriptions of current and obsolete API service categories.


2. Viscosity Grade: The measure of an oil’s thickness and ability to flow at certain temperatures. Vehicle requirements may vary. Follow your vehicle manufacturer’s recommendations on SAE oil viscosity grade.


3. Energy Conserving: The “Energy Conserving” designation applies to oils intended for gasoline-engine cars, vans, and light trucks. Widespread use of “Energy Conserving” oils may result in an overall savings of fuel in the vehicle fleet as a whole.



The API Service Symbol “Donut” with CI-4 PLUS

Used in conjunction with API CI-4 and CJ-4, the “CI-4 PLUS” designation identifies oils formulated to provide a higher level of protection against soot-related viscosity increase and viscosity loss due to shear indiesel engines. Like Energy Conserving, CI-4 PLUS appears in the lower portion of the API Service Symbol “Donut.”


 

Guidance & Information Support Courtsey by API.





 

Which oil is right for you?

Note: API intentionally omitted “SI” and “SK” from the sequence of categories.

 
 

GUIDE TO SAE VISCOSITY GRADES OF ENGINE OIL FOR PASSENGER CARS


Multigrade oils such as SAE 5W-30 and 10W-30 are widely used because, under all but extremely hot or cold conditions, they are thin enough to flow at low temperatures and thick enough to perform satisfactorily at high temperatures. Note that vehicle requirements may vary. Follow your vehicle manufacturer’s recommendations on SAE oil viscosity grade.


If lowest expected outdoor temperature is

Typical SAE Viscosity Grades for Passenger Cars

0°C (32°F) 5W-20, 5W-30, 10W-30, 10W-40, 20W-50
   
–18°C (0°F) 5W-20, 5W-30, 10W-30, 10W-40
   
Below –18°C (0°F) 5W-20, 5W-30
 

The current and previous API Service Categories are listed below. Vehicle owners should refer to their owner’s manuals before consulting these charts. Oils may have more than one performance level.For automotive gasoline engines, the latest engine oil service category includes the performance properties of each earlier category. If an automotive owner’s manual calls for an API SJ or SL oil, an API SM oil will provide full protection. For diesel engines, the latest category usually – but not always – includes the performance properties of an earlier category.

 

   GASOLINE ENGINES

 

Category

Status

Service

SM

Current

For all automotive engines currently in use. Introduced in 2004, SM oils are designed to provide improved oxidation resistance, improved deposit protection, better wear protection, and better low-temperature performance over thelife of the oil. Some SM oils may also meet the latest ILSAC specification and/or qualify as Energy Conserving.

SL

Current

For 2004 and older automotive engines.

SJ

Current

For 2001 and older automotive engines.

SH

Current

For 1996 and older engines.

SG

Current

For 1993 and older engines.

SF

Current

For 1988 and older engines.

SC

Current

CAUTION:Not suitable for use in gasoline-powered automotive engines built after 1967. SC Use in more modern engines may cause unsatisfactory performance or equipment harm.

SB

Current

CAUTION: Not suitable for use in gasoline-powered automotive engines built after 1971. Use in more modern engines may cause unsatisfactory performance or equipment harm.

SC

Current

CAUTION: Not suitable for use in gasoline-powered automotive engines built after 1967. Use in more modern engines may cause unsatisfactory performance or equipment harm.

SB

Obsolete

CAUTION:Not suitable for use in gasoline-powered automotive engines built after 1951. Use in more modern engines may cause unsatisfactory performance or equipment harm.

SA

Obsolete

CAUTION: Contains no additives. Not suitable for use in gasoline-powered automotive engines built after 1930. Use in more modern engines may cause unsatisfactory performance or equipment harm.
 
 
 

   DIESEL ENGINES

Category

Status

Service

CJ-4

Current

Introduced in 2006. For high-speed, four-stroke engines designed to meet 2007 model year on-highway exhaust emission standards. CJ-4 oils are compounded for use in all applications with diesel fuels ranging in sulfur content up to 500 ppm (0.05% by weight). However, use of these oils with greater than 15 ppm (0.0015% by weight) sulfur fuel may impact exhaust aftertreatment system durability and/or oil drain interval. CJ-4 oils are eective at sustaining emission control system durability where particulate ters and other advanced aftertreatment systems are used. Optimum protection is provided for control of catalyst poisoning, particulat filter blocking, engine wear, piston deposits, low- and high-temperature stability, soot handling properties, oxidative thickening, foaming, and viscosity loss due to shear. API CJ-4 oils exceed the performance criteria of API CI-4 with CI-4 PLUS, CI-4, CH-4, CG-4 and CF-4 and can eectively lubricate engines calling for those API Service Categories. When using CJ-4 oil with higher than 15 ppm sulfur fuel, consult the engine manufacturer for service interval.

CI-4

Current

Introduced in 2002. For high-speed, four-stroke engines designed to meet 2004 exhaust emission standards implemented in 2002. CI-4 oils are formulated to sustain engine durability where exhaust gas recirculation (EGR) is used and are intended for use with diesel fuels ranging in sulfur content up to 0.5% weight. Can be used in place of CD, CE, CF-4, CG-4, and CH-4 oils. Some CI-4 oils may also qualify for the CI-4 PLUS designation.

CH-4

Current

Introduced in 1998. For high-speed, four-stroke engines designed to meet 1998 exhaust emission standards. CH-4 oils are specifically compounded for use with diesel fuels ranging in sulfur content up to 0.5% weight. Can be used in place of CD, CE, CF-4, and CG-4 oils.

CG-4

Current

Introduced in 1995. For severe duty, high-speed, four-stroke engines using fuel with less than 0.5% weight sulfur. CG-4 oils are required for engines meeting 1994 emission standards. Can be used in place of CD, CE, and CF-4 oils.

CF-4

Current

Introduced in 1990. For high-speed, four-stroke, naturally aspirated and turbocharged engines. Can be used in place of CD and CE oils.

CF-2

Current

Introduced in 1994. For severe duty, two-stroke-cycle engines. Can be used in place of CD-II oils.

CF

Current

Introduced in 1994. For off-road, indirect-injected and other diesel engines including those using fuel with over 0.5% weight sulfur. Can be used in place of CD oils.

CD

Current

Introduced in 1955. For certain naturally aspirated and turbocharged engines.

CC

Current

CAUTION: Not suitable for use in diesel-powered engines built after 1990.

CB

Obsolete

CAUTION:Not suitable for use in diesel-powered engines built after 1961.

CA

Obsolete

CAUTION: Not suitable for use in diesel-powered engines built after 1959.