Ok I saw a commercial the other day for a fuel injector cleaner saying that using it would give you better gas mileage. I don't doubt that having injectors that aren't clogged up will work better, but do you guys really think that those products work? Same thing for the degunkers or whatever they are called that are supposed to clean build up off of your valves. I was always under the impression that gasoline, especially premium, has enough detergents to keep everything nice and clean inside the engine. So is all this stuff just a way for these companies to make money or do they really work? Just something to talk about.