Nate, to be fair, you should say "could" get rid of the smoking and fouling not "will". I for one (and there are others) have seen absolutely no difference running synthetic in spite of conventional wisdom to the contrary. No difference in smoking, certainly no difference in fouling (mainly because I never have fouling problems with my engine) Not trying to pick a fight, just pointing out to OP that it is not a fact, but rather a possibility. On the other hand, I do believe it's worth giving synth. a try for a gallon (of oil).Originally posted by Nate in Arkansas:<br /> Well Im probably gonna get my head bit off for this, but have you tried synthetic? It will get rid of both problems, especially while trolling.