Originally Posted By: Benzadmiral
Originally Posted By: Brybo86
Originally Posted By: Merkava_4
Originally Posted By: Mantooth
If my memory serves me correctly, the motor should take 92/93 octane, which was recommended by GM.
What do you do if the gas pump buttons say [87] [89] [91] ?
You might be at high elevation
When I lived in Denver, the three octanes were, I think, 85, 87, 91. Not sure about the regular number, though. When I drove up to Georgetown (8500 feet) one Christmas, I remember the regular gas was lower octane than in Denver, but 84 seems low even for that elevation. Denver might have been 86 and Georgetown 85.
I traveled through that area this summer, and the regular was 85. I opted for premium and got good mileage. I was driving the 3.5 Challenger, and out west in SD I got 35 mpg. I was stunned it got so good.