Afterthought: this new 4000 HP V16 engine has a total displacement of approximately 95 liters. That's not much more than the 8-cylinder version of EMD's 710, which is approximately 93 liters, or the 8-cylinder version of GE's FDL, which is approximately 88 liters.
To get twice as much horsepower from the same/similar total displacement is pretty impressive.
The QSK95 uses four (4) turbochargers. I suppose a likely argument from EMD or GE in favor of their own engines would be "why would you want to maintain four turbos instead of just one?"
I'd be really interested to know what kind of fuel consumption this engine has compared to a 16-710 or GEVO-12.
The QSK95 requires diesel exhaust fluid (DEF) in order to meet Tier 4 standards, which obviously means an additional product that railroads would have to buy and store, but I've heard reports from the school bus industry that the new bus engines using DEF get better fuel economy than the competing non-DEF engines, thus making the DEF cost a moot point. It'll be interesting to see if that translates to much larger engines when EMD (and perhaps/probably GE) release their non-DEF Tier 4 engines.
Pan Am Railways — Boston & Maine/Maine Central — Delaware & Hudson
Central Maine & Quebec/Montreal, Maine & Atlantic/Bangor & Aroostook
Providence & Worcester — New England — GE Locomotives