Mixing Sunoco SS 100 to 91 Octane-Any Negatives Besides Price?

I love the 100 LL but what a pain in the butt to drive all the way out to the small airport to get it 5 to 10 gallons at a time..
You can pour it on your hands in 5 minutes later you wouldn't even know you had it on you...
Yah.. I don't have that problem... since the "airport" is my home... or you can just buy more cans! LOL
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