Hi folks this is my first post. Been lurking since the beginning. Just picked up my third 2020 Explorer ST in 11 months so I am familiar with the vehicle and have logged about 13,000 miles on the first two and have 70 miles on the latest Rapid Red unit. My wife calls me Sir Trades-A-Lot 
. I use 91 octane in the 100 % stock vehicle and the sticker on the pump only says the fuel may contain ethanol. I recently found another gas station a few miles from the house with the attatched fuel options (see photo). I am trying to determine what fuel options I can safely use with my new ST. I have followed along reading all the other tune posts so mixing to get e50 and an e50 tune is probably the best setup. I am tempted to fill up with the 93 octane e30 for regular city driving but do not want to jack something up in the engine. Any more advise or experience from the forum would be helpful.
. I use 91 octane in the 100 % stock vehicle and the sticker on the pump only says the fuel may contain ethanol. I recently found another gas station a few miles from the house with the attatched fuel options (see photo). I am trying to determine what fuel options I can safely use with my new ST. I have followed along reading all the other tune posts so mixing to get e50 and an e50 tune is probably the best setup. I am tempted to fill up with the 93 octane e30 for regular city driving but do not want to jack something up in the engine. Any more advise or experience from the forum would be helpful.
