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5.2 Lubricant
【Attended operation】
Only designated lubricant is allowed. Otherwise it may cause engine damages such as blow
engine or cylinder scoring, or earlier wearing thus to reduce machine duration.
(1) Selection of lubricant
● It is recommended to use original lubricant.
●Use 10W-30 and 15W-40 high-grade diesel lubricant (CD grade).
●It is required to select the CD grade (API classification) of marketable lubricant.
(2) Lubricant viscosity
● Choose the lubricant viscosity according to the ambient temperature.
● It is recommended to use the SAE 10W-30 or SAE15W-40 lubricant.
(3) Use of lubricant
● Avoid foreign matters or dust falling into lubricant upon storage
and handling.
● Please pay particular attentions to minor foreign matters around
lubricant inlet upon lubricant fill-in.
● Do not combine different lubricant in order to prevent bad
performance of lubrication.
5.3 Cooling water
It is important to carry on the routine management for cooling water of engine.
Make sure to use clean soft water (fresh water).
(1) Use of cooling water
Cooling water indicates the water combined with LLC, which is frost and rust proofing.
The mixture ratio is among 30% to 50%. When the mixture ratio is lower than 30%, the rust
prevention performance is poor.
The relation between LLC mixture ratio and ambient temperature is as following:
30%: -10℃
40%: -20℃
50%: -30℃
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