Isuzu 4LE2 - Selecting Engine Oil; Engine Oil Viscosity

5-6
INSPECTION AND MAINTENANCE
Engine Oil
The engine oil has functions of cooling inside the engine and flushing out the debris
inside the engine. The engine oil has a significant impact on the performance and
service life of the engine, and fuel economy, so use of the recommended oil is
encouraged.
ADVICE
Continually using the same oil without adding and changing it could cause
seizure or damage to the engine. Add or change the oil when the quality of
the oil has degraded or the quantity is reduced, even if that occurs before
expiration of the specified intervals in the Maintenance Schedule, which will
differ depending on the conditions of use.
•
Selecting the Engine Oil
As for the engine oil, use the Isuzu genuine low-ash engine oil or those equivalent
to the oils specified below. When planning to use any other engine oil, contact the
machine manufacturer or an Isuzu Distributor.
LUBRICATION
GRADE
API ACEA JASO
Diesel engine crankcase (low ash oil) CJ-4
E6
E9
DH-2
Engine Oil Viscosity
The viscosity of the engine oil (SAE) is an important factor determining the engine
startability, performance, oil consumption, etc. When oil of an inappropriate viscosity
is used, rapid wear or a failure such as a seizure may occur. Use oil of an appropriate
viscosity suitable for the outside air temperature in accordance with the table below.
30 C
(86 F)
-30 C
(-22 F)
-15 C
(5 F)
[Multi grade]
[Ambient
temperature]
SAE 10W-30
SAE 10W-40
SAE 15W-40
IDE-6450A4500781ALL.indd5-6IDE-6450A4500781ALL.indd5-6 2014/04/1814:19:582014/04/1814:19:58