I wouldn’t use any low grade fuel. It has a ton of detergents and fillers in it. Use whatever the highest grade fuel at the pump. BTW, a buddy did some pump gas testing around his place (3 hours from me) and found out the most alcohol he found at the pump was 7% and most were under 5%.
He also checked the few e85 fuels he could find none of them were anywhere near 85% ethanol.
I've always noticed the "up to x% of ethanol" and wondered what the content really was. I think most of ours around here is up to 10%. Also on the e85 I've read a bunch of tests that showed more like high 60s to mid 70s on the ethanol content.
