Why would a foresters engine develop a knock with semi synthetic oil replaced 500kms ago ? The car has never overheated and the oil light did not come on ?!

Asked by Apr 15, 2017 at 03:52 PM about the 2000 Subaru Forester

Question type: Maintenance & Repair

4 Answers


No reason unless the oil level or oil pressure dropped too low.

1 people found this helpful.

If it's too thin it might not cushion between the bearings etc enough and allow it to contact the cyl head. If it's too thick of oil? Not sure.. I'd check #4 for the tap as it's most likely to Be starved for oil.

Thanks guys, I am dismantling the engine to find out more , oil has a good EP factor so should not be the problem. Oil pressure light did not come on either ?


interesting.. you check your oil yet? Here's an interesting read: https://forums.nasioc.com/forums/showthread.php?t=2352033

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