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TP-5695 12/933-4 Scheduled Maintenance
Lubrication System
Specifications
Use high quality detergent oil of API (American
Petroleum Institute) service class SF, SF/CC, or SF/CD.
This information can be found on most oil containers,
see Figure 3-1. The symbol illustrated identifies the API
service class in the upper portion. The center indicates
the SAE (Society of Automotive Engineers) viscosity
grade. The bottom portion (when used) signifies the oil
is intended to improve fuel economy and displays the
phrase “Energy Conserving.” Select viscosity based on
the air temperature at the time of operation. (See
Figure 3-2.)
SAE 10W40 is the preferred oil for general use where
temperatures permit.
1--792
Figure 3-1. Oil Service Class and
SAE Viscosity Grade Symbol
When Outside Temperature
is Consistently:
Use SAE
Viscosity Grade:
Below 5_ F (--15_ C)
5W30
--5_ F (--21_ C) to
90_ F (32_ C)
10W30
Above 15_ F (--10_ C)
20W40 or 20W50
Above --5_ F (--21_ C)
10W40 (Preferred)
Figure 3-2. Recommended SAE
Viscosity Grades
Using other than the appropriate service class oil or
extended oil change intervals could cause engine
damage which is not covered by the engine warranty.
Do not mix oils of different viscosities. It is also best not
to mix different brands of oils. Possible incompatibility
could cause a breakdown of lubricating ingredients and
reduce engine protection.
Oil Check
Check oil level in crankcase daily or before each startup
to insure that the level is in the safe range.
NOTE
Do not check oil level when unit is running. Generator
set must be stopped and level to get an accurate
reading.
If generator set has just been run, allow a few minutes
for the oil to return to the oil pan before checking level.
To check oil level, remove dipstick and wipe the end
clean, place bottom thread of dipstick against oil fill hole
and remove. Do not screw in dipstick when checking oil
level. Level should be between MIN and MAX marks on
dipstick. See Figure 3-3.
NOTE
Do not operate the set if the level is below the MIN mark
or above the MAX mark. Oil above the MAX mark is
wasted due to increased oil consumption.
1
2
3
1. MAX Limit
2. MIN Limit
3. Safe Range
1-826
Figure 3-3. Checking Oil Level