1. On the transmission shift selector, press the up
and down arrow keys simultaneously. See Fig. 3.
2. Release the arrow keys and wait for a two-
minute countdown.
3. The transmission shift selector display screen will
display one of the following messages.
• OL - OK indicates an acceptable oil level.
• OL - HI followed by a number indicates the
amount that is over-filled.
• OL - LO followed by a number indicates
the amount that is under-filled.
• OL - 70 indicates that the transmission is
not up to operating temperature.
Alternate Method
1. Operate the transmission in a Drive (D) range
until normal operating temperature, 160 to 200°F
(71 to 93°C), is reached.
NOTE: The fluid must be warm to ensure an
accurate check. The fluid level rises as tempera-
ture increases.
2. Park the vehicle. Shift to Neutral (N) and apply
the parking brake. Let the engine run at idle.
3. Wipe the dipstick clean and check the fluid level.
A safe operating level is any level within the HOT
RUN (upper) band on the dipstick. See
Fig. 2.
4. If the fluid is not within this range, add or drain
fluid as needed to bring the level to the top of
the HOT RUN band. See
Table 1 for approved
transmission lubricants. See
Table 2 for lubricant
capacities.
26–03 Allison Transmission
Fluid and Filter
Changing (internal/
external filter)
IMPORTANT: For oil and filter change intervals,
see the applicable Allison Operator’s Manual. To
request a replacement Allison Operator’s
Manual, call 1-888-666-5799.
Oil and filter change intervals can also be found
at
www.allisontransmission.com. Choose
"Service", and click "Service Tips". Then, select
the appropriate transmission to view fluid and
filter change recommendations.
Approved Allison Transmission Lubricants
*
TES-295 Approval
Number
Company Product Brand Name
AN-051005 ExxonMobil Lubricants and Petroleum Specialties Company Mobil Delvac Synthetic ATF
AN-011001 Castrol Heavy Duty Lubricants TranSynd
AN-031002 BP Autran Syn 295
M
O
N
I
T
O
R
S
E
L
E
C
T
R
N
D
MODE
f270159
03/04/2008
1
1. Shift Selector Display Screen
Fig. 3, Transmission Shift Selector
Transmission26
Recreational Vehicle Chassis Maintenance Manual, June 201526/2
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