5
•
Some DEXRON
®
fluids are also qualified as Type C-4 fluids. To ensure the
fluid is qualified for use in Allison transmissions, check for a DEXRON
®
or
C-4 fluid license, or approval numbers on the container, or consult the
lubricant manufacturer. Consult your Allison Transmission dealer or
distributor before using other fluid types; fluid types such as Type F and
universal farm fluids may or may not be properly qualified for use in your
Allison transmission.
•
When choosing the optimum viscosity grade of fluid to use, duty cycle,
preheat capabilities, and/or geographical location must be taken into
consideration. Table 1–1 lists the minimum fluid temperatures at which the
transmission may be safely operated. Preheat with auxiliary heating
equipment or by running the vehicle with the transmission in
N
(Neutral)
or
P
(Park)
for a minimum of 20 minutes before attempting range operation.
Table 1–1. Transmission Fluid Operating Temperature Requirements
1–7. FLUID AND FILTER CHANGE INTERVALS
Fluid and filter change frequency is determined by severity of
transmission service and by the filter equipment installed. Table 1–2 is a
general guide. More frequent changes may be required when operations
are subject to high levels of contamination or overheating.
CAUTION
: Disregarding minimum fluid temperature limits can
result in transmission malfunction or reduced transmission life.
Viscosity Grade
Ambient Temperature Below Which Preheat
Is Required
Fahrenheit Celsius
SAE 0W-20 (Arctic) –31 –35
DEXRON
®
-III
–22 –30
SAE 10W –4 –20
SAE 15W-40 5 –15
SAE 30 32 0
SAE 40 50 10
To Next Page
Loading...
Need help?
General
