I am kind of under the same dilemma; I work a power station where we push a lot of coal with a 31 yd blade. Right now we have a 92 D8N with around 36k - 40k hours (~3k+/yr). We're looking to purchase a new equivalent (size) machine. Right off the bat I was going for the Cat D8T with the same specs, typically heard that Cat is the dozer for longevity. The question was posed why not one of the other brands? Their probably less $$, so I started to gather info on the JD 1050C, Dressta TD-25M and the Komatsu D155 for comparison. I’ve been searching the web for any comparisons and /or reliability data to lead us one way or the other. Does anyone now of these types of sights (like consumer report)? Or any feedback one way or the other.
The D8N we have now has done us well, typically engine or transmission rebuild around every 9,000 hours. Thank You. Jim O