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Old 08-08-2010, 02:03 PM   #38
Russ/40
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Join Date: May 2010
Location: Santee, California
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Default Re: Marvelous Mystery Oil?

Quote:
Originally Posted by Jon View Post
OK, some one explain to me how it would lube the exhaust valves?? I'm not trying to be funny or step on someones toes, I've heard this all before and was just wondering how does the unburned oil in the fuel mixture get to the exhaust valves and do them any good?
On a teardown after running MMO, I found the oil does not burn, but leaves a film on all the cylinder components. It does make it through the exhaust path, thus it does lubricate the exhaust valves.
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