Paid 3.79 per gallon at Exxon this morning to fill it up. 😡. 75 cents between the cheap junk fuel (85 octane) and the 91 octane here in the Denver area. 87 is their "mid grade", which was 3.35, I think.I've been paying 3.69 at all the local top tier stations for quite some time. I wish it was how it was 15+ years ago when there was a 10 cent separation between fuel grades.