Well gents pull up an ammo can and pop a squat, the way this product came about the owner Ethan who told me this personally who is a chem engineer by trade, would go out with his Dad on those big racing boats. and those require serious octane fuel requirements and fuel stabilization, so he developed his product to suit that need I believe he had some connection with torco years ago (I forgot exactly how that was in our conversation) but not only does the boostane boost octane its a semi fuel stabilizer. I have used it my self and had zero issues. and for the record anything that burns is going to leave some residue, your comparing it with running ethanol which has a hydrotropic property to it like a detergent. gunpowder residue gasoline residue but there will always be some. now speedy pass me a beer.