Motorpsychology
Well-Known Member
- First Name
- Chris
- Joined
- Nov 13, 2019
- Threads
- 21
- Messages
- 3,290
- Reaction score
- 11,484
- Location
- Prescott, WI
- Vehicle(s)
- 2021 Ranger STX SuperCab 4X4 Carbonized grey; 2025 Mazda CX-90 Platinum Quartz
- Occupation
- Vagabond
More specifically, Marathon, Cenex Shell and Arco 91 oct E-0 are Top Tier. KwikTrip/KwikStar used to be but I see they have been dropped from Top Tier's list.In Wisconsin our 91 premium, the highest we get, is 0%. Only thing I run in my small engined or motorcycle. Ethanol gas goes bad too fast and gums up the carbs. Everything else is 10%, 15% or E85. It's also why our premium os 90 cents more than 87.
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