Hard to say. I would guess 12-14. I try to keep tank as full as possible at all times. E85 varies greatly in MN. Best I’ve tested was 78 Worst was 13. ( and that was at an E85 pump ). Average at a pump I would say is mid 60’s. I just buy 5 gallon drums of VP 85 and 98 now. Not sure how I would measure the mpg without running tank dry. I only go thru a couple tanks June - Sept.
` 1990 NA 1993 TT |