Engine Oil: Service Precautions

American Petroleum Institute (API) Engine Oil Identification Symbol:

For best performance and maximum protection for all engines under all types of operation, select only engine oils that meet American Petroleum Institute (API) certification and SAE viscosity standards.

This symbol on the front of an oil container means that the oil has been certified by the American Petroleum Institute (API) to meet all the lubrication requirements specified by DaimlerChrysler Corporation.