People that live here will know that there's 91 octane at every gas station and that's our premium grade fuel. 87 Octane is mid and 85 Octane is a low.

So is there 93 somewhere?

Also if I'm tuned for 91 is using 93 gonna mess me up?

Okay back to some dragon age 2

 

due to the altitude in colorado all you will need is 91 octaine
unless you convert to e85

 

mike, u will only see 91 in colorado, here in WA we have 92 and were my bro lives in vegas they have a gas station that has 101-103-105 in the pumps, of course its like $10/gal but still sweet!! and remember winter gas is not really 91 either, they have special stuff in it to make it not freeze, so when summer rolls around the gas will be better

 

There is a station with 93 octaine in Hygiene Colorado. That is between longmont and lyons.