Lubricating oil should be changed on a heavy duty diesel engine when（）.
A: it gets dark in color
B: a sample rubbed between fingers feels thin
C: it has been in use for a specified interval
D: it no longer supports combustio
A: it gets dark in color
B: a sample rubbed between fingers feels thin
C: it has been in use for a specified interval
D: it no longer supports combustio
举一反三
- The temperature difference between the inlet and outlet temperature of the lube oil cooler in the lubricating system for the diesel engine is generally between （）.
- Before starting a diesel engine that has an engine driven lube oil pump， the engineer should （）.
- Lubricating oil systems for diesel engine journal bearings are usually lubricated by which of the following types of lubricating oil systems?（）
- If the detergent type lubricating oil being used in a diesel engine is black, the oil （） A: must be centrifuged B: must by filtered C: must be changed D: is holding finely dispersed carbon in suspensio
- For diesel engine piston cooling， lubricating oil can be supplied to the pistons by a/an （）.