Have no intention of using Avgas. Don't care about the cats or the platinum as I live in Vermont and the yearly inspection determines that the wheels are attached and the lights work. Messing up the ECU is more important.
This appears to be a local problem as most people go cheap for their cars and very few cars actually require high test fuel so the underground tanks will have frequent change overs for the 89 and 91 but the 93 will go slow and the ethanol mixes do not last long at all. That stuff will attach to water in short order and phase split and drop to the bottom. The local auto parts stores are doing a great business selling fuel conditioners and dry gas as well as fuel pumps! The problem is known and unfortunately mandated by law. Until that changes this problem will continue. When I go into New York State there are stations that sell alcohol free fuel and I make a point to fill up there but that is over 50 miles away.
I would love to get 98 octane here but it is rare. I lived in Germany for a year and discovered that even diesel fuel had higher cetane ratings over there due to it coming from mostly Saudi crude which is a superior oil to begin with. That level of quality here is mostly unknown. Flying J Travel Centers had the best fuel as they had their own refineries. My F350 loved it!
