Global Machinery Company Sierra 1999 - Manual (Page 320)

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How to Add Fluid
Refer to the Maintenance Schedule to determine what
kind of transmission fluid to use. See “Recommended
Fluids and Lubricants” in the Index.
Add fluid only after checking the transmission fluid
while it is hot. (A cold check is used only as a
reference.) If the fluid level is low, add only enough of
the proper fluid to bring the level up to the HOT area for
a hot check. It doesn’t take much fluid, generally less
than one pint (0.5 L). Don’t overfill.
NOTICE:
We recommend you use only fluid labeled
DEXRON
R
- III, because fluid with that label is
made especially for your automatic transmission.
Damage caused by fluid other than
DEXRON
R
- III is not covered by your new
vehicle warranty.
D After adding fluid, recheck the fluid level as
described under “How to Check.”
D When the correct fluid level is obtained, push the
dipstick back in all the way; then flip the handle
down to lock the dipstick in place.
Manual Transmission Fluid
When to Check
A good time to have it checked is when the engine oil is
changed. See your maintenance schedule to find out
when to change your transmission fluid.