Piston engine · Question 7 of 12
Apart from lubrication, what job does the engine oil do?
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Answer
- D It cools the parts inside the engine
Explanation
Engine oil reduces friction, carries heat away from pistons, bearings and cylinders, seals between piston rings and cylinder wall and carries dirt to the filter. In air-cooled aero engines it provides a large part of the cooling. Oil temperature and oil pressure are therefore monitored continuously.