L
You can
be
injured and your vehicle could be
damaged if
you
try to
do
service work on a
vehicle without knowing enough about it.
0
Be sure you have sufficient knowledge,
experience, and the proper replacement
parts and tools before you attempt
any
vehicle maintenance
task.
Be me to use the proper nuts, bolts and
other fasteners. “English” and “metric”
fasteners can be easily confused. If
you
use
the wrong fasteners, parts can later break
or fall off.
You
could be hurt.
Fuel
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.)
If
YQU
don’t have
the
5.7L
Code
P
engine, use regular
unleaded gasoline rated at 87
octane
or higher.
If
you
have the
5.7L
Code
P
engine,
use
premium
unleaded gasoline rated at 9 1 octane or higher for best
performance.’
You
may use middle grade or regular
unleaded gasolines, but your vehicle may not accelerate
as
well.
At a minimum, the gasoline you use should meet
spe’cifications
ASTM
D4814
in
the United States and
CGSB
3.5-M93
in Canada. Improved gasoline
specifications have been develope’d
by
the American
Automobile Manufacturers Association (AAMA)
for
better vehicle performance and engine protection.
Gasolines meeting the
AAMA
specification could
provide improved driveability and emission control
system protection compared to other gasolines.
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 knocking
noise when
you
drive.
If
it’s bad enough, it can damage
your engine.
If
you’re using fuel rated at the recommended 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.
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