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Just a quick question would thick oil cause a compression release not to work ?
 

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All of the manual compression releases that I have come in contact with were in the combustion chamber and would not be affected by oil.

The automatic compression releases that I have seen wouldn’t be affected by engine oil unless someone decided to use 50w or something similar. Even then it should work but be slow to deactivate.


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On a Kohler K engine, there is a thing on the cam that holds the exhaust valve open slightly until it reaches a certain RPM. I could see oil affecting it, but doubt if it would. Lack of oil would affect it more, I would think.
 
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