Spicer® Transmission Lubrication
To insure proper lubrication and operating temperatures
in these units, it is important that proper lubricants be
used and correct oil levels be maintained.
The lubricants listed below are recommended, in order of
transmissions, auxiliaries and transfer cases.
DO NOT USE EXTREME PRESSURE ADDITIVES,
such as found in multi-purpose or rear axle type
lubricants. These additives are not required in Spicer
transmission problems. Multi-purpose oils, as a group,
have relatively poor oxidation stability, a high rate of
sludge formation and a greater tendency to react on or
corrode the steel and bronze parts.
We recommend an initial oil change and flush after the
transmission is placed in actual service. This change
should be made any time following 3000 miles (4827
km), but never exceed 5000 miles (8045 km) of over-
the-road service. In off-highway use, the change should
be made after 24 hours-but before 100 hours-of service
have been completed.
Many factors influence the following oil change periods.
Therefore, a definite mileage interval is not specified
here. In general, however, it is suggested that a drain
and flush be scheduled every 50,000 miles (80,450 km)
for normal over-the-highway operations. Off-highway
uses usually require an oil change every 1000 hours.
The oil level in the transmission should be checked every
5000 miles (8045 km) on-highway, or every 40 hours in
off-highway operation. When it is necessary to add oil,
we recommend that types or brands of oil not be mixed.
The correct oil level in all Spicer transmissions is
established by the filler plug opening.
First, remove all dirt around the filler plug. Then refill the
transmission with new oil. Use the grade recommended
for the existing season and prevailing service. The
lubricant should be level with the oil fill plug located on
the right side of the transmission case.
Do not overfill the transmission. This usually results in oil
breakdown due to excessive heat and aeration from the
churning action of the gears. Early breakdown of the oil
will result in heavy varnish and sludge deposits that plug
up oil ports and build up on splines and bearings. Oil
overflow escapes onto the clutch or parking brakes,
causing additional trouble.
Above 0° F (-18°C)
SAE 30, 40, or 50
Heavy duty engine oil meeting MIL-L-2104D or MIL-L- 46152B,
Below 0° F (-18C)
API-SF or API-CD
NOTE: Oils meeting MIL-L-2104B and 2104C, or 46152
are also acceptable.
Above 0° F (-18C)
Straight mineral gear oil - R & O Type, API-GL-1
Below 0° F (-18°C)