Bonneville America Forums Forums Technical Forums General Tech how to change from synthetic to regular oil?

One of the biggest problems with petroleum oil is that it has a much higher volatility rating than say a good synthetic. The volatility rating of an oil is the measured rate that it evaporates at. Since petroleum oils have waxes and other impurities the volatility of an oil has a direct effect on the oils ability to maintain its viscosity. So with a petroleum oil in a air cooled engine versus a good synthetic you will need to change the oil approximately 4 to 8 times more often to maintain the same wear and cleanliness of the internal parts.