API Engine Oil Change Guidelines

American Petroleum Institute (API) guidelines to help you get more from your motor (engine) oil.

 

• Always refer to your car owner’s manual for type of oil to use.
• Always follow manufacturer’s motor oil change recommendations.
• Always use only the recommended API category:“S” for gasoline engines; i.e. SG, SH, SJ, SL, SM, SN, SP, & “C” for diesel engines; CH-4, CI-4, CJ-4.
• Always select the proper SAE oil viscosity grade.
• If you want to mix different brands of oil, use the same viscosity grade and API service category to properly maintain performance.
• Always properly dispose of used engine oil.
• Always Look for the API Certification marks every time you buy engine oil.
• Always ask your vendor for API-licensed oil whenever you have your oil changed.