Why do so many Americans hate European trucks?

This is spot on. And is why most of us do not spec a truck to run 75. Even in a low mileage operation like mine the cost difference between 75 and 65 is huge.

For me, the reason for a strong engine isn't to run 75 mph, it's so i can get 120k lbs moving from the bottom of a steep incline like coming out of a quarry. Sure my truck can go 75, but rarely do i ever go that fast. 65 is fast enough 95% of the time.

 

Salt dont work below -7c about 20f ,so you need liquid spray

 

Question is can you climb a decent grade with full load with the rpms at 900. Or do engine temperatures climb dangerously high....?

I’d blow mine up if I did that......

 

Sure, but your engine is of a somewhat older design, meant to run at a higher RPM. You should check the torque curve to see what it is doing at 900 RPM. The engine temperature would be rising if the coolant isn't pumped fast enough trough the engine block, so the pump must be designed to be effective at that speed.

 

With a conventional engine set up, the speed of the fan, the water pump and the oil pump all depend on the speed of the engine. Make no mistake, these components also use a lot of horsepower. When the engine is running at a low speed, but with a heavy load, these components are also running slowly, and that's what you don't want.

It's time the fan, the water pump and the oil pump get their own electric motors, regulated of course. That way they can run at the optimal speed for what the engine needs at that moment. It would also mean you can get oil pressure before the engine starts, making the actual start much easier (a well lubricated engine turns over much easier), and reducing wear. So the only thing you would need to be driven by the engine itself is a big generator. Perhaps we will get that when the industry moves from 12V and 24V to 48V.

Edit: I forgot the airco pump!

 

My alternator is variable 24-30v reduce consumption.

Steering pump electronic variable too compressor is 2 stage, water pump 2 stage

But with low rpm works on small hills 47x family can climb even with 800rpm but for long incline you need high rpm, or speed down in same gear....

 

Cat,my 06 MX started pulling at 900rpm.
97000lbs gross.
NEVER ran hot.

 

It’s like working in a salt mine.....real work .



Not so much here......

 

Was that winter storm you're talking about at the end of March?
We got a load of heavy stuff one year and I think it was 78/79.
Yes, and I remember a state of emergency and the army was activated to assist.

It's just a few years too many to remember exactly.

 

If you don't mind me asking, what engine do you have, which transmission, drive axle ratio, and tire size?

Thanks