Operation CHARM: Car repair manuals for everyone.

Engine Oil: Description and Operation

ENGINE OIL SPECIFICATION.

CAUTION: Do not use non-detergent or straight mineral oil when adding or changing crankcase lubricant. Engine failure can result.

API SERVICE GRADE CERTIFIED

Engine Oil Container Standard Notations:





Use an engine oil that is API Service Grade Certified. Standard engine oil identification notations have been adopted to aid in the proper selection of engine oil. The identifying notations are located on the label of engine oil plastic bottles and the top of engine oil cans.

SAE VISCOSITY

Temperature/Engine Oil Viscosity:





An SAE viscosity grade is used to specify the viscosity of engine oil. SAE 1OW-30 specifies a multiple viscosity engine oil.
When choosing an engine oil, consider the range of temperatures the vehicle will be operated in before the next oil change. Select an engine oil that is best suited to your area's particular ambient temperature range and variation.

ENERGY CONSERVING OIL
An Energy Conserving type oil is recommended for gasoline engines. The designation of ENERGY CON-SERVING is located on the label of an engine oil container.