I have only ever used whatever the highest at the gas station is. Price really don't matter when your only filling 2-5 gallons!

 

same with me, 92-93 octane

 

Same here

 

Shell V-Power, 93 Octane. usually purchased from the same local Shell Station for a stock 96 with Stage I and XiED's. If I have to refuel with lower octane, I keep a few gallons of toluene around (114 octane) and as soon as possible add enough to bring the octane up to 93 using (R+M)/2.

Overkill? Probably, but it's a holdover from my old boat racing days.

 

With my mods I use on-line sites to find stations that sell high octane that does not contain ethanol. When possible I boost each tank with NOS race-only booster.

 

There is a lot of threads on this already just to bust your chops, but I try to use non-oxy if at all possible other wise the premium at the gas station I am filling up at.

 

The cheapest gas I can find..

 

depends on the oil you use

 

87 and 93 i mix them sometimes and have no problems

 

Premium only.

And I put my gas cap on my seat when filling up...in case anyone asks.