Psssst.. You didn't hear this from me, I have a friend that had a engine with around 850 hours on it, and every annual he had some problem with at least one jug, most of the time it was a valve sticking... A&E tried Mystery Oil, and I recall even removing a valve cover and tapping lightly on the rocker.....
I should note, since some think it matters, he runs a lot of auto fuel, and 80/87... very little 100.... So he decided next oil change he would add one of the Name Brand Teflon products. I remember him doing it It was winter so he warmed up the engine, drained the oil, warmed up the new oil and "Product"... ran the engine for 10 hours, then changed back to straight oil.... He reported, Static run up was up over 200 rpm, in fact he did have to lower idle too. Next compression check compression was up... and has stayed up Engine ran cooler and he has not had ANY engine problems since, this was done over 8 years ago. (he does add the product once a year) He still uses the same Aero Shell oil and changes it at 30 hours, and at annual. Oil is a lot cheaper than a overhaul...
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