2008 Toyota Highlander Owners Manual - Page 138

1-5. Refueling Closing the fuel tank cap When replacing the fuel tank cap, turn it until a clicking sound is heard. After releasing your hand, the cap will turn slightly to the opposite direction. 1 Before driving n Fuel types Use unleaded gasoline. (87 Octane rating [Research Octane Number 91] or higher) n Fuel tank capacity Approximately 19.2 gal. (72.5 L, 15.9 Imp. gal.) 107