TRUCK SERVICE MANUAL
FOR LUBRICATION INTERVALS REFER TO OPERATORS MANUAL
New vehicles are properly lubricated at the factory
Only lubricants of the best quality, having proper
and before they are delivered. After the vehicle is placed
body or viscosity, and supplied by reputable
in operation, regular lubrication intervals, based on the
manufacturers, should be used. The use of inferior or
type of service and road conditions, should be
non-compatible products might reduce the service life of
established. Thorough lubrication at definite intervals will
the vehicle or result in failure of its components.
add greatly to the service life of the vehicle and will
reduce the overall operating expense.
The International Harvester Company Truck Division
does not attempt to specify any particular manufacturer's
product. Highgrade lubricants can be obtained from any
The interval between lubrication periods, oil
reputable oil company.
changes, etc., depends entirely upon operating
conditions. The loads carried, speed, road and weather
The lubrication specifications refer only to the
conditions all contribute to the frequency of lubrication
viscosity (SAE) agd type to be applied. The viscosity
periods. In some types of operation, and where
numbers have been adopted by the Society of
operating conditions are extremely severe, the vehicle
Automotive Engineers to classify lubricants according to
may require lubrication after every twenty-four (24) hours
"body" or "thickness" and do not cover any other
In some operations, such as in deep water, mud, or
unusually dusty conditions, the interval of inspection and
IMPORTANT: When adding lubricant, it should be
lubrication should be more frequent.
the same weight and viscosity which is already being
For recommended lubrication intervals, refer to
Truck Operator's Manual.
Differential: SP type lubricant, SAE-90 viscosity year around, meeting
MIL-L-2105B specification. (SP must not contain zinc.)
For abnormally high temperature, severe service (hot
climate, off highway operation where vehicle is in low
speed, heavy hauling for prolonged periods), use SAE-140.
NOTE: Trac-Lok axles, add/20 cm3 (2/3 ounce) of IH-LS
additive for each .47 liter (pint) of SP lubricant used.
IH 251H EP grease or equivalent NLGI #2 multipurpose
King Pin Bushings: