For those of you in metropolitan areas and oxygenated gas, here is a suggestion. Do not drive your car in short trips. Absolutely nothing less than 3 miles, and very rarely less than 10 miles. If you follow the above, the gasoline and water in the oil will evaporate quickly, as the operating temperature of the oil is right around the boiling point of water. Even better, giving your car a good high speed drive every now and then, will allow the oil to heat up and eliminate all but the very-very heavy hydrocarbons from the gasoline inside the oil. Driving a car like this also means you may not have to change the oil as often. Well, if you don't change the oil very often, you might just as well switch to a synthetic, and forget about the snake oils! D^2 Quoting mopar48291@xxxxxxx: > Those of us who live in metropolitan areas in hot climes most assuredly > have to > deal with stuck valves and bent pushrods. The oxygenated gas we are > forced to > use has water as a major component of the ethanol or methanol blend. > That > blend can turn to varnish in just a few months and thus deposit itself > on the > valve stems thereby "gumming up" the works. If you don't believe me, > I've got > a bunch of twisted valve stems I can show you.