How to Add Fluid
Refer to the Maintenance Schedule to determine what
kind of transmission fluid to use. See Recommended
Fluids and Lubricants on page 6-13.
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 does not take much fluid, generally less than
one pint (0.5 L). Do not overfill.
Notice: Use of automatic transmission fluid labeled
other than DEXRON
®
-III, Approved for the
H-Specification, may damage your vehicle, and the
damages may not be covered by your warranty.
Always use automatic transmission fluid labeled
DEXRON
®
-III, Approved for the H-Specification.
• After adding fluid, recheck the fluid level as
described under “How to Check,” earlier in
this section.
• 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.
Automatic Transmission Fluid
(Allison Transmission
®
)
When to Check and Change
A good time to check your automatic transmission fluid
level is when the engine oil is changed.
Change both the fluid and filter every 25,000 miles
(41 500 km) if the vehicle is mainly driven under one or
more of these conditions:
• In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
• In hilly or mountainous terrain.
• When doing frequent trailer towing.
• Uses such as found in taxi, police or delivery
service.
If you do not use your vehicle under any of these
conditions, change the fluid and filter every
50,000 miles (83 000 km).
See Scheduled Maintenance on page 6-4.
5-30
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