dito. I'm no chemist. What I have gathered from smater people then me is. Water, alcohol and sulpher makes sulpheric acid and corodes the fuel pump and injectors. Sulpher and phosforus falls out of suspension and builds up on fuel level sensors and injector pentles / nozzles. Polymers from hoses builds up in injector nozzles and pentles. Gasoline breaks down into it's componant parts over time. Alcohol exascerbates this and Sta-bil does not work in fuel fortified with alcohol. We are using techron concentrate fuel system cleaner on our entire new and used fleet and it seems to be working well as a preventative and even has noticable restorative properties on bikes that already have poor injector spray paterns. Does sea foam work better or the same and is cheaper? Cheaper or better would be great! Also, what are your thoughts on fill procedures. Right now, new bikes come in the crate with 1/4 gallon of fuel. The fuel is not treated but is alcohol free. We add one oz of techron fuel system cleaner and 1 gallon of gas as we are required to test ride as soon as the bike is uncrated. The bike then sits in the showroom until purchased, at which point we fill it the rest of the way with fresh gas. On used bikes, since they are always available for test rides, I fill them with gas and 1oz per gallon of techron fsc. These bikes are ridden at least 6 miles once a month by me in addition to test rides. Any thoughts on this? There is only one me, and I am responcible for run ability on all new and used bikes. Between fueling, exercising, airing tires, charging batteries, fluids and everything else, I have no time to spare as I have many other duties as well. But if anyone has any suggestions on improving the condition bikes are delivered in, or cutting labor and chemical costs, I'm all ears.