Quote:
Originally Posted by silverteam
Yes there is a way. It's called a LEAK DOWN TEST. Every garage should have this. I'm quoting from the "Technical Data Passengers Car" book from Mercedes Benz:
Total read out not higher than 25% leakage
on piston rings 20%
on valves and cylinder head gasket 5%
I assume you know how the test goes??
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Leakdown and compressions test address the performance of the rings controlling compression. The ring(s) controlling oil are not tested by those 2 methods. Both leakdown and compression test are inconclusive for identifying the use of oil.