I have a 04 PIV with saddles and add quickleen and mercury fuel treatment/stabilizer to every gallon added. The I siphon old gas out of the belly tank for tractor, lawnmower, weedeater, edger, generator, etc. rather than let it set long enough to go stale, condensate, or separate. Now that Mercury has redone their fuel additive lines breaking out into several separate products, upping the price and not providing (that I can find) bottles larger than 12oz, Im thinking seriously about switching instead to Marine Sta-bil and Seafoam, which Ive used in an 82 9.9 Merc and various small engines for many years. Does anyone have any long-term experience with Marine Sta-bil or Seafoam in a high horsepower outboard?ThanksDeke