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Carbonized oil on valves - RISILONE?? 900

posted by  Andrew in AL on  Fri Mar 29 08:08 CST 2002
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last visit: Fri Oct 24 06:17 CST 2014
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I read of carbonized oil on the valves. I presume it is coming from oil flowing through the turbo?

I have noticed some ticking in my 940T (195K)....so,
...yesterday I stopped and put in 1/2 qt of Risilone (to bring oil to proper level). I was a bit cautious about trying anything new with my 'Red Flash' ...but it really seems to have more power, and I can tell that the sound from the valves is quieter.

Did I do good? Should I put the other half in at the next oil change?

Andrew in AL

91 940T (195K)







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Carbonized oil on valves - RISILONE?? 900

posted by  someone claiming to be ringlee on  Fri Mar 29 16:31 CST 2002 [RELATED]

Are you burning oil? How much? Smoke out the back?








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Carbonized oil on valves - RISILONE?? 900

uid 55's pic
posted by  john sargent on  Fri Mar 29 13:53 CST 2002
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last visit: Wed Oct 22 09:07 CST 2014
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Carbonized oil on the valves comes from oil coming down the valve stems. Volvo uses seals on the intake valve guides. Since the exhaust valves aren't in a low pressure area, they don't need seals. If your turbo was leaking that much oil, it would be shot.







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