Thread: oil dilution
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Old 03-23-2013, 09:56 AM
olddog olddog is offline
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Quote:
Originally Posted by patrickt View Post
That's no answer. Do you know whether it will mix or separate? And if it separates, which goes to the top? Of course you do know that it is not unusual to have the presence of fuel in your oil analysis. Levels of 2%, according to my Blackstone reports, are not considered out of the ordinary.
Here is your answer. Yes oil and gasoline mix and do not separate. We do it all the time for the old 2 cycle engines.

My son built a SBC. The new mechanical fuel pump had a hole in the diaphragm, unbeknownst to him. After the normal start up set timing, etc. it started to knock at idle. He called me to come listen to it. Car had an idiot light and it never came on. I said check the oil. He said I just poured 5 quarts in, I know it is right. I said humor me, I'm old. He pulled the dipstick out and it was about 4 quarts over, thin as water, and smelled like gasoline.

Bottom line it was well mixed and never separated, when the engine was pulled apart a week later.

Last edited by olddog; 03-23-2013 at 09:59 AM..
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