The differences happen underground, just more subtly... Until you pumo it through an above ground pump. This thing stays at ambient temp, so the fuel heats some as it rises up.

The winter mileage would be awesome if there were no additives. I notice about a 3-4 mpg jump if I fuel in the deep south, then travel north during the winter. We don't get winter additives in Florida, and I can make it clear to Tennessee on a fillup just north of the Ga state line in the winter (fuel is the same, just 10-20 cents cheaper). That's about 345 miles on 15 gallons of fuel = 23 miles per gallon, going 75-80. If I slowed down to 70, I probably could cross the 25 mpg threshhold. <img src="/forums/images/graemlins/kewl.gif" alt="" />

"A young man who does not have what it takes to perform military service is not likely to have what it takes to make a living." - John F. Kennedy

Proud owner of an 88 Montero (with a blown engine).