2004 Lexus IS 300 Owners Manual - Page 355

03 07.09 ENGINE Oil identification marks To ensure excellent lubrication performance for your engine, "Toyota Genuine Motor Oil" is available, which has been specifically tested and approved for all Lexus engines. Please contact your Lexus dealer for further details about "Toyota Genuine Motor Oil". SOIL11 "API Service Symbol "ILSAC Certification Mark Either or both API registered marks are added to some oil containers to help you select the oil you should use. D The API Service Symbol is located anywhere on the outside of the container. The top portion of the label shows the oil quality by API (American Petroleum Institute) designation such as SL. The center portion of the label shows the SAE viscosity grade such as SAE 5W-30. "Energy-Conserving", shown in the lower portion, indicates that the oil has fuel-saving capabilities. D The ILSAC (International Lubricant Standardization and Approval Committee) Certification Mark is displayed on the front of the container. 336