2011 Toyota Tundra Double Cab Owners Manual - Page 137

1-5. Refueling Hang the fuel tank cap on the back of the fuel filler door. Closing the fuel tank cap When installing the fuel tank cap, turn it until you hear a click. The cap will turn slightly to the opposite direction when released. n Fuel types (Gasoline engine) Use unleaded gasoline. (Octane rating 87 [Research Octane Number 91] or higher) n Fuel types (Flex-fuel engine) Use unleaded gasoline (Octane rating 87 [Research Octane Number 91] or higher), E85, or a blend of these two fuels. (→P. 668) 108