Rear Axle; Engine Coolant; What To Use - Pontiac 2000 Firebird Owner's Manual

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

Standard Differential
-
Use SAE 75W 90 Synthetic Gear Lubricant (GM
Part No. 12378261) or equivalent meeting GM
Specification 9986115.
-
Limited Slip Differential
To add lubricant when the level is low, use SAE 75W
Synthetic Gear Lubricant (GM Part No. 12378261) or
equivalent meeting GM Specification 9986115. To
completely refill after draining, add 4 ounces (118 ml)
-
of Limited Slip Differential Lubricant Additive (GM
Part No. 1052358) or equivalent. Then fill to the bottom
of the filler plug hole with the Synthetic Gear Lubricant.
6-26

Engine Coolant

The cooling system in your vehicle is filled with
COOL R engine coolant. This coolant is designed
-
DEX
to remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs first, if you add only
COOL R extended life coolant.
-
DEX
The following explains your cooling system and how to
add coolant when it is low. If you have a problem with
engine overheating or if you need to add coolant to your
radiator, see "Engine Overheating" in the Index.
A 50/50 mixture of clean, drinkable water and
COOL R coolant will:
-
DEX
D
Give freezing protection down to
D
Give boiling protection up to 265
D
Protect against rust and corrosion.
D
Help keep the proper engine temperature.
D
Let the warning lights and gages work as
-
90
they should.
_ _
- -
34 F ( 37 C).
_ _
F (129 C).