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
for best
performance.
You my use middle
grade
or regular
unleaded gasolines, but your vehicle may not accelerate
as
well. The gasoline you use should meet speakations
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 anwg
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 91 (at
least
89
for middle grade and
87
for regular). If the octane
is less than
87,
you may get a heavy hocking noise when
you drive.
If
it’s bad enough, it can damage your engine.
If you’re using
fuel
rated at 91 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.
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.
I
6-4
_ir
To Next Page
Loading...
