All-Wheel Drive; Transfer Case (Power Transfer Unit) - Oldsmobile 2004 Silhouette Owner's Manual

All-Wheel Drive

If you have an all-wheel-drive vehicle, be sure to perform
the lubricant checks described in this section. However,
they have two additional systems that need lubrication.

Transfer Case (Power Transfer Unit)

When to Check Lubricant
Refer to the Maintenance Schedule to determine
how often to check the lubricant. See Scheduled
Maintenance on page 6-4 .
5-48
How to Check Lubricant
To get an accurate reading, the vehicle should be on
a level surface.
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 on page 6-12 .