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      06-06-2023, 08:39 AM   #5
AHall
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Drives: 1993 Nissan 240sx
Join Date: Oct 2008
Location: Frisco, Texas

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Quote:
Originally Posted by M5Rick View Post
After replacing PCV's and smoke remains have a compression and leak down test done, these done should point you in the right direction.. I don't think any oil additives are a permanent solution.
Or even advisable. Do these cars require the engine to come out to change the valve seals? Sounds like valve seals since the smoke is not constant.
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