>Friend and I are fairly obsessed with "older" Dodge diesel trucks.

So you hate getting a value for your money almost as much as the Toyota guys then?

How are those cute miniature ball joints holding up? Frame splice rusted out yet?

> They have tripled in value in the last decade.

I think you mean that the 1000lb dowel eating turd with a stupidly stupidly thin cylinder head casting that occupies the space under the hood has tripled in value in the last decade. The trucks themselves are sub par. The increase in value is because all the ones that don't have a Cummins have long since been scrapped so the ones remaining are kinda, sorta worth a couple bucks.

Regardless, Cummins 12v (and 24v) engines are so expensive that unless you can't read a wiring diagram or need weight up front for a pulling truck you're probably better served with a 6.0 LS

(Yes I'm being intentionally contrarian here but you know there's a grain of truth in what I'm saying)

Neither of you are wrong.

Aah, yes, the pre-DEF diesel trucks. Quite possibly the one class of vehicle I'd be more than happy to see removed from the road with whatever legislative overreach required.

Yeah, I'm kind of fed up with trucks spewing columns of foul-smelling black soot out of their tailpipes right at my car. Sorry if that makes me rude.

If a 90s diesel is spewing foul-smelling black soot then it's 1. poorly maintained 2. illegally modified (those guys are pricks).

Also DEF, urea, is a NOx control mechanism and does nothing for the particulate matter.

Ironically, NOx emissions legislation must increase particulate emissions and worsen mpg (Less NOx needs lower T, lower T means more incomplete combustion, poorer combustion means particulates).

So DEF is an attempt by engine manufacturers to meet NOx emissions without increasing particular matter and destroying mpg.

But you'd use gov't overreach and not solve anything directly (obviously, indirectly, you'd get rid of ill-maintained and illegally modified trucks... but that's poor legislation)

Running on WVO?