87 Octane in an EcoBoost with GPF

[Cherokee]

I filled up with 90 octane ethanol free fuel Yesterday I usually use 93 octane with 10/15 percent Ethanol. They only had 90 octane ethanol free fuel not 93 octane like You use. I'll let You know if I get better mileage on the ethanol free fuel. The bad part is a have to drive 20 minutes to get it,the stations within 10 minutes of My house don't have ethanol free fuel!!

One fill up from near empty may not get all the ethanol out. Do a good Italian tune up.
Gotta be above 63-65 mph to get into eighth gear. I swear mine does best at 70-80 mpg, on level ground.

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