2006 Lexus GX 470 Owners Manual - Page 538

ENGINE Engine oil selection "Toyota Genuine Motor Oil" is used in your Lexus vehicle. Use Lexus approved "Toyota Genuine Motor Oil" or equivalent to satisfy the following grade and viscosity. Oil grade: ILSAC multigrade engine oil. Recommended viscosity: SAE 5W−30 Oil identification marks 62Z002 The ILSAC (International Lubricant Standardization and Approval Committee) Certification Mark is added to some oil containers to help you select the oil you should use. Outside temperature SAE 5W−30 is the best choice, for good fuel economy and good starting in cold weather. If SAE 5W−30 oil is not available, SAE 10W−30 may be used. However, it should be replaced with SAE 5W−30 at the next oil change. 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". 513