exactly what i was thinking.

i noticed less fuel economy running across the southern end of louisiana from texas, due i believe, to more air resistance from the heavy moist and sea level air. when i had that 80 datsun 1300 five speed wagon that was so underpowered it would only do 65 flat out, down there it would only do 60 unless driving in a large group of cars.

if what brian is saying is true, and i have no base info to say it is or isn't, this is an explanation. i have noted that the guys living around denver always report higher fuel economy, by maybe 10%.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.