2010 Toyota Highlander Owners Manual - Page 1788

6-1. Specifications Engine Model Type Bore and stroke Displacement Drive belt tension 1AR-FE 4-cylinder in line, 4-cycle, gasoline 3.54 × 4.13 in. (90.0 × 105.0 mm) 163.0 cu.in. (2672 cm3) Automatic adjustment 2GR-FE 6-cylinder V type, 4-cycle, gasoline 3.70 × 3.27 in. (94.0 × 83.0 mm) 210.9 cu.in. (3456 cm3) Fuel Fuel type Octane rating Fuel tank capacity (Reference) Unleaded gasoline only 87 (Research Octane Number 91) or higher 19.2 gal. (72.5 L, 15.9 Imp. gal.) 6 Vehicle specifications 563