Fuels In Foreign Countries - Chevrolet 2008 Silverado 1500 Pickup Owner's Manual

If you do switch fuels, it is recommended that you add
as much fuel as possible — do not add less than
three gallons (11 L) when refueling. You should drive
the vehicle immediately after refueling for at least
seven miles (11 km) to allow the vehicle to adapt
to the change in ethanol concentration.
E85 has less energy per gallon than gasoline, so you
will need to refill the fuel tank more often when using
E85 than when you are using gasoline. See Filling the
Tank on page 5-10.
Notice: Some additives are not compatible with
E85 fuel and can harm your vehicle's fuel system.
Do not add anything to E85. Damage caused by
additives would not be covered by your new
vehicle warranty.
Notice: Your vehicle was not designed for fuel that
contains methanol. Do not use fuel containing
methanol. It can corrode metal parts in the fuel
system and also damage plastic and rubber parts.
That damage would not be covered under your
warranty.

Fuels in Foreign Countries

If you plan on driving in another country outside the
United States or Canada, the proper fuel might be
hard to find. Never use leaded gasoline or any other
fuel not recommended in the previous text on fuel.
Costly repairs caused by use of improper fuel would
not be covered by your warranty.
To check the fuel availability, ask an auto club, or
contact a major oil company that does business in the
country where you will be driving.
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