RenegadeMonster wrote:Also, if urea-water freezes at 11 degrees, does that mean the Cummings are not reliable in the winter in colder climates?
I'd imagine there is probably some sort of tank heater system similar to the cooling water heating setup on an EMD diesel.
The much scarier prospect, at least from a maintenance perspective, is having to deal with smaller (displacement) engine, more highly stressed, spinning at over twice the RPM of a 645, 710, or GEVO, all while having nearly an order of magnitude more moving parts than an EMD engine.
That's what you get with either the Cummins QSK in the Charger or the Cat in the F125. They should do OK in Amtrak service, but under the transit industry duty/maintenance cycle, that's the kind of stuff that makes mechanics wake up in puddles of sweat in the middle of the night.