I been searching all day and cannot find any definitive answer. I even sent an inquiry to the mfr and have not received a reply.
Has anyone experienced a problem?
I run e85 all summer but put 93 in it in the winter. With the fuel rails I have I drain the tank and switch it out. I was going to go get some e85 but had nearly 5 gallons that has been sitting in my garage all winter from draining the tank. I checked it and was e80. I know when I parked the car e75 was at the stations but our last track outing I had more then e85 in it with some race e85. So not sure why it was e80 but threw it in the car. Went to the station and it is e75 right now but added another 10 gallons
Regular gas I don't like storing in plastic. I had bought some 118 octane that was in 5 gallon pails and blew a head gaskets with it. I got some more of the same stuff that was in a drum and had no issue so I believe in the plastic it lost some octane. This was many years ago on a different car