2008 Toyota Tundra Owners Manual - Page 580

07 11.20 5.7 L V8 (3UR−FE) engine SAE 5W−20 or 0W−20 SOIL020 Outside temperature Oil identification mark SAE 5W−20 or 0W−20 engine oil may be used. However, SAE 0W−20 is the best choice for good fuel economy and good starting in cold weather. 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. 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". 550 2008 TUNDRA from Apr. '08 Prod. (OM34477U)