Whats your MPG?

Ok thats a loaded ? 2003 t600 3:58 rears 475 cummins isx 13 spd Rolling hills tractor 20,050 lbs full fuel 240gal

pulling a pneumatic with 53,000 lbs of cement total 85,000lbs into a soft wind in wyoming well soft for rocksprings 35 mph wind to the jonah oil field= 4.8 mpg struggling to maintain 65 mph

pulling shlumberger sand chief to grand junction co not super heavy but not light either unknown weight 65 mph 6.8 mpg

pulling vac tank trailer with 130 barrels of water 75 mph down I-70 to wamsutter wy 5.5 mpg

I would say i avg 5.5 to 5.8mpg 83,000lbs at 65 mph No wind on flat ground.

 

Keep in mind its my friends rig.

 

2003 W900L C15 MBN bridge set at 1045hp , 18 speed, 3.55s, 290" wheelbase, pulling 48' utility spread axle.

Always over weight with 6 feet of gap between truck and trailer.

5.6-7mpg depending on wind and terrain. I run midwest to west coast over the mountains.

 

Not bad, but not great. I'm looking at doing a few things to improve the mileage a little, and I know it'll get better as the weather warms. I've seen 6.35 MPG this winter on just a straight run between fuel stops through the big hills (Las Vegas to Great Falls); and I generally run 65-70 mph.

 

I have two trucks.

99 Freightshaker Classic XL 435hp 3406E CAT, Super 10, 3.55 rear end which gets 6.72 MPG with 44,201 lbs. from El Paso TX to Claycomo MO

99 Freightshaker Century 430/470 Cruisepower Detroit 60 Series, Straight 10, 3.58 rear end which gets 6.39 MPG with 44,201lbs from El Paso TX to Claycomo MO