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Be sure the posted octane
is
at least
91.
If the octane
is
less than 91, you may get a heavy knocking noise when
you drive. (In an emergency,
you
may be able to use
lower octane
--
as low as
87
--
if heavy knocking does
not occur.)
If
you’re using
91
or higher octane unleaded
gas and you still get heavy knocking, your engine needs
service.
What about gasoline with blending materials that
contain oxygen (oxygenates), such as
MTBE
or alcohol?
MTBE
is
“methyl tertiary-butyl ether.” Fuel that is no
more than
15%
MTBE
is
fine for your vehicle.
Ethanol
is ethyl or grain alcohol. Properly-blended fuel
that is no more than 10%
ethanol
is fine for your
vehicle.
i
Wethanol
is methyl or wood alcohol.
NOTICE:
Fuel that
is
more than
5%
methanol
is
bad for
your vehicle. Don’t use it. It can corrode metal
parts in your fuel system and also damage plastic
and rubber parts. That damage wouldn’t be
covered under your warranty. And even at
5%
or
less, there must be “cosolvents” and corrosion
preventers in this fuel to help avoid these
problems.
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