2010 Toyota Highlander Owners Manual - Page 581

6-1. Specifications Oil viscosity l The 5W portion of the oil viscosity rating indicates the characteristic of the oil which allows cold startability. Oils with a lower value before the W allow for easier starting of the engine in cold weather. l The 30 in 5W-30 indicates the oil viscosity when the oil is at its operating temperature. An oil with a higher viscosity may be better suited if the vehicle is operated at high speeds, or under extreme load conditions. Cooling system Without rear air conditioning system 7.3 qt. (6.9 L, 6.1 Imp. qt.) 8.0 qt. (7.6 L, 6.7 Imp. qt.)* With rear air conditioning system 9.6 qt. (9.1 L, 8.0 Imp. qt.) 10.4 qt. (9.8 L, 8.6 Imp. qt.)* Without rear air conditioning system 9.3 qt. (8.8 L, 7.7 Imp. qt.) 10.0 qt. (9.5 L, 8.4 Imp. qt.)* With rear air conditioning system 11.6 qt. (11.0 L, 9.7 Imp. qt.) 12.4 qt. (11.7 L, 10.3 Imp. qt.)* Use either of the following. • "Toyota Super Long Life Coolant" • Similar high-quality ethylene glycol-based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid organic acid technology Do not use plain water alone. 2.7 L 4-cylinder (1AR-FE) engine Capacity (Reference) 3.5 L V6 (2GR-FE) engine Coolant type *: With towing package 558