Into the @m*m^2

[Rawze]

As far as boost levels go, even when not pulling, that style of big-nose truck will be hard pressed to keep under 10 psi boost going down the highways on flat ground at 60 mph where an aero truck would be sitting at mostly zero (and using a lot less fuel) because it is not fighting those stacks and front end.

Sometimes when I get into a strong headwind, I will see a constant 10+ psi boost where i would typically not see any, just to maintain speed. A square-nose truck would be seeing 20+ in those same conditions. - My fuel mileage drops from 8 down to high 6's, so I can just imagine how bad it would be for someone trying to pay the fuel bill on a truck that did this all the time.