New vehicles are lubricated before they are delivered.
After the vehicle is placed in operation, regular
lubrication intervals, based on the type of service and
road conditions, should be established. Thorough
lubrication at definite intervals will add to the Low Cost of
Ownership (LCO) and will reduce the overall operating
The interval between lubrication periods, oil changes,
etc., depends entirely upon operating conditions. The
loads carried, speed, road and weather conditions all
contribute to the frequency of lubrication periods. In
some types of operation, and where operating conditions
are extremely severe (such as in deep water, mud, or
unusually dusty conditions), the vehicle may require
Only lubricants of the best quality ., having proper body
or viscosity, should be use, The use of inferior products
will reduce the service life of the vehicle or result in
failure of its components.
The lubrication specifications refer only to the viscosity
(SAE) and type to be applied. The viscosity numbers
have been adopted by the Society of Automotive
Engineers to classify lubricants according to "body" or
thickness" and do not cover any other properties.
Unless otherwise specified, never add lubricant unless it
is the same grade as that which is already in use. If the
grade is unknown or not available, drain flush and refill
with new lubricant.
The Lubrication Intervals specified should be performed
at whatever interval occurs first, whether it is months or
Keep oil level as near the high level mark as possible.
Never operate an engine with oil level below low level
When checking the oil level, the dipstick must be
withdrawn and wiped clean, then inserted all the way and
withdrawn again for a true reading.
Never check the oil level with the engine running or
immediately after engine shutdown as an inaccurate
reading will be obtained.
ENGINE OIL SPECIFICATIONS
Oil quality is described by API (American Petroleum
Institute) engine service categories. API categories are
categories (SC, SE, SF) describe oils for spark ignition
(gasoline) engines, while "C" categories (CC, CD)
describe oils for diesel engines. Oils with both "S" and
"C" categories (such as SF/CD) are suitable for both
spark ignition and diesel engines. Sometimes, the "S"
and "C" categories are reversed (such as CD/SF).
Oil quality is also described by two current U.S. Military
Specifications, MIL-L-46152B and MIL-L-2104D. (MILL-
2104D recently superseded MIL-L-2104C, which is now
obsolete but which may still be widely used.)
The oil quality recommended depends upon engine type
(diesel or spark ignition) and engine design. There are
many supplementary fuel and oil additives for sale. If you
recommendations, your engine will not require these
: Do NOT use oils specifically marketed by suppliers
for stationary, marine, or railroad diesel engines, or
for stationary natural gas engines, even though they
are marked API category CD. Such oils can cause
excessive valve train wear and combustion chamber
deposits. (These oils are sold only In drums or bulk.)