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by msisk6 2853 days ago
A bit late to the reply, but mostly it's perception: when the urea-injection exhaust-aftertreament systems first came out in 2013 or so there were a few reliability issues that dealers didn't do a good job of fixing. It's much improved now and my truck hasn't had any issues at all.

And, I'm sad to say, some folks just like the whole "rolling coal" thing and the ability to put out huge plumes of black smoke.