flyinrazrback

I was faced with the same problem for my ZDZ's. I just use 93, no problems. Something that I do is to only buy gas from a place that sells a lot of 93, to get "fresh" gas. I always first put about 4 gals into my car before I fill my 1 gal can. The logic is that there is still "other" fuel in the plumbing of the common filler line. I have had "bad" gas from some gas stations that made my ZDZ's run badly. After getting fresh fuel, all was well.

There was a discussion once on how to blend you own fuel from AVGAS and 93 to get the right octane. I don't trust that level of tinkering one bit. The octane ratings are never precise anyway.

Safe Flying!