Before my Mercury engine went down, I added 30 gallons of 91 octane (Merc 250XS of that year requires it). It had about 15 gallons of 91 octane fuel already in the tank leftover from last fall. I always add Quikstor, Quikleen and Quikcare to my gas. They are recommended to be run on the Optimax engines to keep carbon levels down and to keep the injectors clean. So... with all of that said, I have about 40-50 gallons of gas in my tank that I am not sure if I should run in my brand new Suzy 250SS. Any advice?