I was wondering if running my 96 polaris xcr 600 not sp monoblock with regular 87 gas would hurt it any in manual says run 89 atleast? Would octane booster help or thin my oil? I run starbrite ethanol treatment everytime and put a little oil in my gas maybe that helps. Anyways premium more or less out of my way the stores I gas up at are all regular but they get alot of traffic. Any advice would be help thanks.