MPH vs MPG
I bought a 2022 Chevy 3500 6.6L Duramax Turbo Diesel and wanted to check the fuel economy for both towing and not towing. The numbers you'll see DO NOT include regen periods where the engine is burni...
Forum Discussion
dieseltruckdriver wrote:
It's not the weight, it's the wind that will have the largest effect on your mileage.
It doesn't matter if you hand calculate or not on a no wind day, what matters more is how tall is your trailer. Notice I didn't say how long is your trailer.
Source: 17 years as a truck driver grossing 120,000 lbs in a previous life.
Yes.
With a TT it’s generally a 40% penalty at 60-mph versus the TV loaded the exact same way, solo. Above 50% time to check both vehicles for alignment, brake drag and wheel bearing pre-set. But you won’t know “true” unless you test. Solo, load approximated for camping, then hitched, over same course. Otherwise it takes several thousand miles of consistency.
Height does kill MPG. 6’ longer is better than 1’ higher.
Measure the floor height from ground. “Lower” in that case is the first condition. Side-outs are not one’s friends as then it must clear suspension. Turbulence UNDER trailer magnifies that BETWEEN TV & TT.
See pics of HOLIDAY RAMBLER for best made conventional (non-aero) from the 1970s.
As to fuel mileage otherwise, 62-mph Interstate and below posted on two lanes.
Manage others around you. 1973 or 2023 doesn’t change this.
Cruise control, no lane-changing and avoidance of brakes & throttle. Steady rpm. Anything above 65 isn’t economical. 62 makes it easier for trucks to get around. Lights on, mirrors which converge in image 100’ back. Cancel cruise, maintain lane center and drift down to 55 if they’re slow. Re-engage once they’re 7-8 stripes ahead.
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