Pouring Engine Oil; Inspection Of Engine Oil Leakage After Replacing Oil Filter; Water - Mitsubishi S12U Operation & Maintenance Manual

Pouring Engine Oil

1 Remove the cap from the oil filler.
2 Pour designated engine oil to the specified level.
Specified engine oil Class CD or CF
(API Service Classification)
Specified engine oil capacity (oil pan)
S12U: approx. 450 L [118.88 U. S. gal]
S16U: approx. 600 L [158.50 U. S. gal]
Note: Regarding engine oil, refer to
3 Check the oil level with the oil level gage.
If the automatic oil feeder is installed, check if it
works normally.
The oil level should be between the MAXIMUM and
MINIMUM marks on the oil level gage.
If the oil level is low, add specified type of engine oil.
4 Check the oil pan and other parts for engine oil
leaks. Repair any oil leakage found.
5 Operate the engine oil priming pump to circulate oil
in the engine.
6 Remove the rocker cover, and make sure that oil is
supplied to the valve mechanisms, and install the
rocker cover.
7 Stop the priming pump. After about 30 minutes, add engine oil until the oil level reaches the MAXIMUM
line on the oil level gage.
8 Reinstall the cap on the oil filler.

Inspection of Engine Oil Leakage After Replacing Oil Filter

1 Start the engine, and let it idle for several minutes.
2 Check the oil filter for engine oil leakage. If any leakage are found, remove and reassemble, making sure
that there are no scratches on the packing, then reinstall or reassemble the filter.
Inspection of Engine Oil for Mixing of Fuel and Water
If the engine continues to operate with engine oil mixed with fuel or water, the engine oil viscosity decreases
and this can cause serious accidents such as seizing of bearings.
Sample 1 to 2 L [0.26 to 0.53 U. S. gal] of engine oil, and check for abnormal odor and discoloration to deter-
mine the mixing of fuel and water.
If fuel is mixed with the engine oil, the oil will smell like fuel.
If water is mixed with the engine oil, the oil will be milky white.
If fuel or water is detected in the engine oil, find the cause of the problem, and repair. If the problem cannot be
corrected easily, contact a Mitsubishi dealer.
Chapter 6
PERIODIC INSPECTION AND MAINTENANCE PROCEDURES
"Engine Oil" (4-4).
il filler
fig.6-19 Oil filler and level gage
ngine oil
priming pump
fig.6-20 Engine oil priming pump
il level gage
6-11