Join Date: Oct 2007
Location: Great White North
there's a lot of difference to the fuel other than just octane.
93+ is generally oxygenated and will run leaner than lower octanes, you'll need a different ignition map for best power under best case scenario, worst case scenario is burned valves from the heat.
I run 87 in the jeep, but frankly, I'd run kerosene in the jeep and not think twice about it, wartime era designs aren't picky about their fuel, and where generally designed to be flex fuel anyways. If I was driving a more modern engine I wouldn't use 87 just on the basis of the dirtyness of the fuel, the lack of cleaners, the lack of anti-gels etc.
When hell freezes over, we'll ride there too.