GMC 1998 Safari Owner's Manual page 287

Rear Axle
When to Check and Change Lubricant
Refer to the Maintenance Schedule to determine how
often to check the lubricant and when to change it. See
"Scheduled Maintenance Services" in the Index.
How to Check Lubricant
If the level is below the bottom of the filler plug hole,
you'll need to add some lubricant. 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 cooling s stem in your vehicle is filled with
DEX-COOL engine coolant. This coolant is designed
to remain in your vehicle for 5 years or 150,000 miles
(240 000
k m )
whichever occurs first, if you add only
DEX-COOL' extended life coolant.
The following explains your cooling system and how t
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 DEX-COOL@
coolant will:
0
Give freezing protection down to -34°F (-37°C).
0
Give boiling protection up to 265 " F (129°C).
0
Protect against rust and corrosion.
Help keep the proper engine temperature.
0
Let the warning lights and gages work as
J
they should.
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