2006 Toyota Highlander Owners Manual - Page 401

'06 HIGHLANDER HB_U (L/O 0503) Checking the coolant level Oil identification marks Either or both API registered marks are added to some oil containers to help you select the oil you should use. 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) designations 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. The ILSAC (International Lubricant Standardization and Approval Committee) Certification Mark is displayed on the front of the container. To ensure excellent lubrication performance for your engine, "Toyota Genuine Motor Oil" is available, which has been specifically tested and approved for all Toyota engines. Please contact your Toyota dealer for further details about "Toyota Genuine Motor Oil". Gasoline engine coolant reservoir Inverter coolant reservoir 388 2006 HIGHLANDER (Hybrid) from Mar. '05 Prod. (OM48530U)