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2-Speed Rear Axles-S.A.E. "Multi-Purpose" Gear Lubricant,
Power Divider (Tandem Axle Trucks)-April 1 to October 1
(approximately)-SAE 140 Straight Mineral Oil Lubricant,
or SAE 140 "Multi-Purpose" Gear Lubricant. October 1 to
April 1 (approximately)-SAE 90 Straight Mineral Oil Lubri-
cant, or SAE 90 "Multi-Purpose" Gear Lubricant.
Caution: Straight Mineral Oil Gear Lubricants must not be used
in Hypoid Rear Axles or 2-Speed Rear Axles.
Conventional Transmissions-S.A.E. 90 Straight Mineral Oil
Gear Lubricant, or
S.A.E. 90 "Multi-Purpose" Gear
Lubricant
The S.A.E. 90 viscosity grade is recommended for "year-
around" service. However, when extremely low temperatures
are encountered for protracted periods during the winter
months, the S.A.E. 80 viscosity grade may be used.
"Multi.Purpose" Gear Lubricants. Gear lubricants that will
give satisfactory lubrication for all types of operation have
been developed. These lubricants are known as "Multi-
Purpose" Gear Lubricants.
"Multi-Purpose" Gear Lubricants may be used in conven-
tional truck transmissions, steering gears, and in universal
joints requiring a fluid lubricant.
"Multi-Purpose" Gear Lubricants must be manufactured
under carefully controlled conditions and the lubricant manu-
facturer must be responsible for the satisfactory performance
of his product. His reputation is your best indication of quality.
Lubricant Additions. The lubricant level in the housing should
be checked periOdically and with unit at operating temperature,
lubricant should be level with bottom of filler plug hole.
It
is recommended that any additions required to bring up
the lubricant level be made, using the same type of lubricant
as in the housing.
Lubricant Changes. Seasonal changes of the rear axle lubri-
cant are not required, however it may be necessary and
advisable to drain the transmission and rear axle in trucks
subject to severe service. Flushing may then be accomplished
with a light flushing oil. Do not use water, steam, kerosene,
gasoline, alcohol, etc.
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