octane for 89 330hp 7.4 liter?
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octane for 89 330hp 7.4 liter?
I have been running 91 octane because i live in minnesota and the is the only way to get non-ethanol fuel is to buy the premium. Is it ok to run 87 or 89 octane with ethanol in this engine or am I going to see problems with fuel system componants or gumming up my carb??