Toyota Tundra Quick Reference Manual page 136

1-5. Refueling
Closing the fuel tank cap
■
Fuel types (Gasoline engine)
Use unleaded gasoline. (Octane rating 87 [Research Octane Number 91] or
higher)
■
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. 669)
110
Hang the fuel tank cap on the
back of the fuel filler door.
When installing the fuel tank cap,
turn it until you hear a click.
The cap will turn slightly to the
opposite direction when released.
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