Downloaded from www.Manualslib.com manuals search engine Fuel
3.4L L32 (Code S) and 3800 L36 (Code K)
The 8th digit of your vehicl,e identification number
(VIN) shows the code letter for your engine. You will
find the
VIN at the top left of your instrument panel.
(See “Vehicle Identification Number”
in the Index.)
Use regular unleaded gasoline rated at
87 octane or
higher.
It should meet specifications ASTM D4814 in
the United States and CGSB 3.5-92 in Canada. These
fuels should have the proper additives,
so you should not
have to add anything to the fuel.
In the United States 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 (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.
Etl?mol is ethyl or grain alcohol. Properly-blended fuel
that is no more than 10%
ethuuol is fine for your
vehicle.
Metlwrnof 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 “co~oIvent~’’ and corrosion
preventers in this fuel to help avoid these
problems.
6-3
Downloaded from www.Manualslib.com manuals search engine Fuel
5.7L LT1 (Code P)
The 8th digit of your vehicle identification number
(VIN) shows the code letter for your engine.
You will
find the
VIN at the top left of your instrument panel.
(See “Vehicle Identification Number” in the Index.)
Use premium unleaded gasoline rated at
91 octane or
higher.
You may use middle grade or regular unleaded
gasolines, but your vehicle may
not accelerate as well.
The gasoline you use should meet specifications ASTM
D4814 in the United States and
CGSB 3.5-92 in
Canada. These fuels should have the proper additives,
so
you should not have to add anything to the fuel.
In the United States 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 for premium is at least
9 I (at
least
89 for middle grade and 87 for regular). 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
9 1 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 (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.
Methanol is methyl or wood alcohol.
I 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.
6-4
