Cadillac 2010 STS Owner's Manual

Also see for 2010 STS: Brochure Owner's manual

What Kind of Engine Oil to UseLook for three things:. GM4718MThis vehicle's engine requires a special oil meetingGM Standard GM4718M. Oils meeting thisstandard may be identified as synthetic. However,not all synthetic oils will meet this GM standard.Use only an oil that meets GM StandardGM4718M.Notice: Using oils that do not have the GM4718MStandard designation can cause engine damage notcovered by the vehicle warranty.. SAE 5W-30SAE 5W-30 is best for the vehicle. These numberson an oil container show its viscosity, or thickness.Do not use other viscosity oils such asSAE 20W-50.. American Petroleum Institute (API) starburstsymbolOils meeting theserequirements should havethe starburst symbol onthe container. This symbolindicates that the oil hasbeen certified by theAmerican PetroleumInstitute (API).This vehicle's engine was filled at the factory with aMobil 1 ® synthetic oil meeting all requirements for thisvehicle.Substitute Engine Oil: When adding oil to maintainengine oil level, oil meeting GM Standard GM4718Mmight not be available. You can add substitute oildesignated SAE 5W-30 with the starburst symbol at alltemperatures. Substitute oil not meeting GM StandardGM4718M should not be used for an oil change.6-20