Companies running 379 or 389 Peterbilts

The major oil companies and the largest fuel haulers, all specify and run very light weight tractors. Every pound they could shave has already been done, and has been for quite a while. And this includes brand new equipment. Doesn’t matter if it’s a long hood or aero. It’s the gallons in the trailer that pay the bills, and that’s the real incentive. Pete’s and Kenworth’s do seem to have a pretty good share of the market. It also helps with driver retention, they don’t run aluminum wheels because they look good, they weigh less than steel. I do notice that most of the larger fleets are also running super singles all around. Not because they’re better, again they weigh less = more payload. Although it’s a different story with trucks running in the patch, they need to be more sturdy to take the torture and abuse they get, not built as light weight as fuel delivery.

 

Yeah, I think newer W9's are definitely heavier, even pre-emissions. Bigger sleeper always equals bigger weight. I'm trying to come up with the dream bulk hauling tractor, for the biggest net weights. C-12 CAT comes in with the best power to weight ratio, and for it's size, I've heard they are huge workhorses.

We have one that regularly pulled B-trains through Ontario and never gave up.

 

Gotcha. Back in the 90’s I hauled rock for a company out of Cheyenne. They ran Freightliner Classics with the small flat top sleeper, 3176 Cat (basically a C-12), 10 speeds. They were good trucks and LIGHT.

Wouldn’t win no pulling contests, but got the job done without fuss every time.

 

High pressure has some NICE equipment.

I used to see them getting anhydrous from time to time when I hauled def. I think they are based out of Oklahoma???

I’d see them at the fertilizer plant in Sioux City.

 

I got a c12 in my w9 mixer now. That engine is a tank. I’m driving through the city everyday at 90k. Stop and go shifting at 2k all day every day. That engine just laughs and keeps pulling. Not gonna win any races but if you want something reliable and pre emissions that’s your engine. I love this truck. 2000 w9, c12 with an 8LL. She rips.

 

c-12 weight 2070 lbs. 6nz/c-16 weight is 2695 lbs. C15 15.2 twin turbo 2895 lbs Cummins ISX15 system weight 3204 lbs. Cummins X15 system weight 3125 lbs.

 

What about detroit?

 

The new X12 Cummins is 2050 lbs (dry weight). For a 500 hp/1700 lbft motor, that's insane.

 

Why can't an engine make 1ft lb torque for every pound it weighs?

 

x12 including the emission components weights 2241 pounds.