When the differential is cold, add enough lubricant
to raise the level to 1/2 inch (12
mm)
below the filler
plug hole.
When the differential is at operating temperature
(warm), add enough lubricant to raise the level to
the bottom
of
the filler plug hole.
What to Use
Refer to the Maintenance Schedule to determine what
kind of lubricant to use. See “Recommended Fluids and
Lubricants” in the Index.
Engine
Coolant
The following explains your cooling system and
how to add coolant when it is low. If you have a
problem with engine overheating, see “Engine
Overheating” in the Index.
A
50/50
mixture
of water and the proper coolant will:
0
Give freezing protection down to
-33°F
(-36°C).
Give boiling protection up to
258
OF
(1
25
O
C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as
they should.
What
to
Use
Use
a mixture
of
one-half
clean
water
(preferably
distilled) and one-half coolant that meets GM
Specification 1825-M, which won’t damage aluminum
parts.
You
can also use a recycled coolant conforming
to GM Specification 1825-M with a complete coolant
flush and refill.
If
you
use this mixture,
you
don’t need
to
add anything else.
Adding only plain water
to
your cooling system
can be dangerous. Plain water, or some other
liquid like alcohol, can boil before the proper
coolant mixture will. Your vehicle’s coolant
warning system
is
set for the proper coolant
mixture. With plain water or the wrong mixture,
your engine could get
too
hot but
you
wouldn’t
get the overheat warning. Your engine could
catch fire and you or others could be burned.
Use a
50/50
mixture
of
clean water and the
proper coolant.
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