I NOTICE
r
Fuel
Use regular unleaded gasoline rated at
87 octane or higher. It should meet
specifications, ASTM
D4814 in the U.S.
and CGSB 3.5-M92 in Canada. These
fuels should have the proper additives,
so you should not have to add anything
to the fuel.
In the U.S. and Canada, it’s easy to be
sure you get the right kind of gasoline
(unleaded). You’ll see
UNLEADED
right on the pump. And only unleaded
nozzles will fit into your vehicle’s filler
neck.
Be sure the posted octane is at least
87.
If the octane is less than 87, you may
get a heavy knocking noise when you drive.
If it’s bad enough, it can damage
your engine.
If you’re using fuel rated at
87 octane or
higher and you still hear heavy
knocking, your engine needs service.
But don’t worry if you hear a little
pinging noise when you’re accelerating or driving up a
hill. That’s normal, and
you don’t have to buy a higher octane
fuel to get rid of pinging. It’s the heavy,
constant knock that means you have a
problem.
What about gasoline with blending materials that contain oxygen, such as
MTBE or alcohol?
c
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ProCarManuals.com
Service & Appearance Care
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 I
than 10% ethanol is fine for your
vehicle.
Methanol is methyl or wood alcohol. I
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I
I
methanol is bad for your vehicle.
on’t use it.
It can corrode metal
parts in your fuel system and
also
damage plastic and rubber pr
That damage wouldn’t be covered
under your warranty. And
e-? at
5% or less, there must be
“cosolvents” and corrosion
,:eventers in this fuel
+n hpll
Gasolines for Cleaner Air
Your use of gasoline with detergent
additives will help prevent deposits from
forming in your engine and fuel system.
That helps keep your engine in tune and your emission control system working
properly. It’s
good for your vehicle, and
you’ll be doing your part for cleaner air.
Many gasolines are now blended with
materials called oxygenates. General
Motors recommends that you use
gasolines
with these blending materials,
such as MTBE and ethanol.
By doing
so, you can help clean the air, especially
in those parts of the country that have
high carbon monoxide levels.
ProCarManuals.com
