2008 Toyota Highlander Owners Manual - Page 555

6-1. Specifications Lubrication system Oil capacity Drain and refill (Reference) Without filter With filter Oil grade 6.0 qt. (5.7 L, 5.0 Imp.qt.) 6.4 qt. (6.1 L, 5.4 Imp.qt.) ILSAC multi-grade engine oil Use Toyota approved "Toyota Genuine Motor Oil" or equivalent to satisfy the grade and viscosity shown below. Vehicles without towing package Recommended oil viscosity Outside temperature Vehicles with towing package 6 Vehicle specifications Outside temperature 529