Fun fact – aerodynamic losses go up by the square of speed. that means, for example, going from 55 to 65 takes 40% more power and a corresponding increase in gas consumption per mile.
Literally everyone knows
Max we hit is 10mpg in our Cat 3126, never going above 65. Nice dash!
Traveling thru California where they speed limit when towing is 55, my usual 8ish mpg turned into 10ish
Wow, who knew?
Maybe everyone telling you this since the fuel crisis of the 70s.
For reference, I’ve averaged 7.5mpg for the past 10k miles, usually going 70mph-ish.
With diesel at over $5.50, I’m not in such a rush.
This is in a (2007) 40′ Fleetwood Province with a CAT c7.
Seeing this makes me HATE my 1984 Fleetwood south wind. I have the 454 and get ~4 mpg at 55 mph. It sucks. It’s expensive. And I REALLY wish I had something newer with a diesel
