Hello fellow seadooers. So I was thinking about the octane I should run in my 05 sea-doo. It states that we are supposed to run 87 octane. Will it hurt to run 89 with the 10% ethanol? The reason I am asking is I reserved 400 gallons of fuel through my work so I could get gas for 3.50 a gallon for 6 months. Which is more then enough. The catch is I cannot get 87% octane and I don't want to put the 89% in the ski if it is going to hurt it. My ski is a 2 stroke GTI 2005.