lately i've been having trouble accessing the Petro Stop for the last couple of weeks with construction on E Quincy Ave and on S Parker Road south of the station.
so I've been going to the Tech Center Sinclair at 7699 East Bellview -
NE corner of E Bellview and I 25.
i'm using a 1 to 3 mix of Sunoco GT 100 unleaded ($4.49) and Sinclair 91 unleaded ($2.15).
costs a bit more, but i'm in the 93.5 + octane range.
might be an illusion, but it seems to run a bit stronger and feels a bit more responsive .
some of these have been mentioned, but thisSunoco's list of Colorado
GT 100 pump locations.
http://www.racegas.com/gt100locals/default.asp