2010 Toyota Highlander Owners Manual - Page 580

6-1. Specifications Use Toyota approved "Toyota Genuine Motor Oil" or equivalent to satisfy the grade and viscosity shown below. Recommended oil viscosity (2.7 L 4-cylinder (1AR-FE) engine) Outside temperature Use Toyota approved "Toyota Genuine Motor Oil" or equivalent to satisfy the grade and viscosity shown below. Vehicles without towing package Recommended oil viscosity (3.5 L V6 (2GRFE) engine) Outside temperature Vehicles with towing package 6 Vehicle specifications Outside temperature 557