Since we buy by the gallon and not the pound... How would that work out on ones wallet? Is one more dense than the other? any interesting links?

Chevron

I found some good info on Ethanol , MTBE and how they affect MPG, but nothing on BTU's vs octane an a quick search of refiners.

For sure the Federal winter blends hurt your MPG 2 -3%, and Cali gas is an automatic year round -3% mpg.

Kevin <img src="/forums/images/graemlins/cyclops.gif" alt="" />

87 Turbo Intercooled Raider, roller cam, torsen rear diff, LSD front diff, lockup auto with modified converter, V6 brakes, low transfer case gears...