Mitsubishi S12R Service Manual

5 ENGINE OIL
Mitsubishi Diesel Engine S12R OPERATION & MAINTENANCE MANUAL
110
Pub. No. 291Y1-40720 Revision: 5
Engine Oil Viscosity
Use the engine oil which viscosity is suitable to the
ambient temperature.
Excessively high oil viscosity causes power loss
and an abnormal rise in oil temperature.
Conversely, excessively low oil viscosity
accelerates wear due to inadequate lubrication,
and also causes a decrease in engine output by
combustion gas blowing through.
Fig. 5-2 Ambient Temperature and Engine Oil
Viscosity
Handling Engine Oil
• When handling a large amount of engine oil more
than the legally specified quantities, be sure to
have the work performed in a service station
operated under the provision of the law.
• When taking oil from an oil can or the like, use an
oil pump.
• Tighten the oil can cap securely, and store the oil
can in a well-ventilated place and out of direct
sunlight.
• Be sure to obtain the SDS of the engine oil to be
used and follow the instructions in the SDS.
Keep away from fire, when working
with flammable substances such as
engine oil.
* They may cause a fire.
Do not operate the engine with fuel or
water mixed in the engine oil.
* Otherwise, viscosity of engine oil may
decrease, which causes seizure of the bearings
or other serious accidents.
Do not store engine oil in a poorly
ventilated place.
* Otherwise, built-up volatile engine oil may be
exposed to a flame, which causes an explosion
or a fire.

SAE10W
SAE30
SAE40
SAE15W-40
Temperature
°C [°F]
Engine oil
viscosity
-30
[-21]
-20
[-4]
-10
[14]
10
[50]
20
[68]
30
[86]
40
[104]
50
[122]
0
[32]
Wipe off spilled flammable
substances such as engine oil
thoroughly with a waste cloth.
* They may cause a fire.
When discarding a waste cloth used
to wipe off combustible material, put
it into a lidded can and obey the
Waste Management and Public
Cleansing Act to handle it as a special
industrial waste.
* It may cause a fire.
* It may cause environmental pollution.
* If you violate rules, you may be subject to
penalties.
When handling engine oil, obey the
manufacturer's SDS.
* If engine oil gets in your eyes, it may cause pain
and lead to sight loss at the worst.
Do not breathe in volatilized engine
oil.
* Otherwise, it may be hazardous to your health.
When storing engine oil in the
container, be sure to close the cap.
* Otherwise, built-up volatile engine oil may be
exposed to a flame, which causes an explosion
or a fire.

Mitsubishi S12R Specifications

General

Brand	Mitsubishi
Model	S12R
Category	Engine
Language	English