Cadillac 2008 CTS - Manual (Page 308)

Check the fluid level only when your engine is off, the
vehicle is parked on a level place and the transmission
is cool enough for you to rest your fingers on the
transmission case.
To check the fluid level, do the following:
1. Remove the filler plug.
2. Check that the lubricant level is up to the bottom of
the filler plug hole.
3. If the fluid level is good, replace the gasket and
reinstall the filler plug.
With either vehicle, be sure the plug is fully seated.
If the fluid level is low, add more fluid as described
in the next steps.
How to Add Manual Transmission Fluid
Here is how to add fluid. See Recommended Fluids
and Lubricants on page 6-11 to determine which type of
fluid to use.
1. Remove the filler plug.
2. Add fluid at the filler plug hole. Add only enough
fluid to bring the fluid level up to the bottom of the
filler plug hole.
3. Replace the gasket and reinstall the filler plug.
Be sure the plug is fully seated.
Hydraulic Clutch
It is not necessary to regularly check clutch fluid unless
you suspect there is a leak in the system. Adding
fluid will not correct a leak.
A fluid loss in this system could indicate a problem.
Have the system inspected and repaired.
When to Check and What to Use
The hydraulic clutch fluid
reservoir cap has this
symbol on it. See Engine
Compartment Overview
on page 5-14 for reservoir
location.
Refer to the Maintenance Schedule to determine how
often you should check the fluid level in your clutch
master cylinder reservoir and for the proper fluid to use.
See Owner Checks and Services on page 6-8 and
Recommended Fluids and Lubricants on page 6-11.
5-26