User Manual - Page 614

For 2019 Tundra.

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612
9-1. Specifications
TUNDRA_OM_USA_OM0C017U_19MY
NOTICE
Notice on fuel quality
Do not use improper fuels. If improper fuels are used, the engine will be
damaged.
Do not use leaded gasoline.
Leaded gasoline can cause damage to your vehicle’s three-way catalytic
converters causing the emission control system to malfunction.
Gasoline engine: Do not use gasohol other than the type previously
stated.
Other gasohol may cause fuel system damage or vehicle performance
problems.
Using unleaded gasoline with an octane number or rating lower than the
level previously stated will cause persistent heavy knocking.
At worst, this will lead to engine damage.
When use of non-specified fuels (Flex-fuel engine)
The use of non-specified fuels will have a negative impact on starting and
driving performance, and will cause damage to the fuel system compo-
nents. Therefore, do not add fuels such as the following.
Fuels containing methanol
Fuels with more than 85% ethanol
Fuel-related poor driveability
If poor driveability (poor hot starting, vaporization, engine knocking, etc.) is
encountered after using a different type of fuel, discontinue the use of that
type of fuel.
When refueling with gasohol
Take care not to spill gasohol. It can damage your vehicle’s paint.
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