If you are using top tier fuel, it seems like a real waste of hard earned $ to use it every fill-up. Try using it less than you are right now and see if upon inspection your stuff is just as clean. If it is then reduce again till you find the "sweet spot", but I'm pretty sure right now you're over doing it.I expect them to clean my carburetors and injectors and the tank itself hopefully. I use Berryman at every fill up. Fuel filters are nice and clean usually on inspection way better than what it looked like when I got it.