10 years since SCR technology on trucks

I keep hearing the scr systems are getting better.
And I admit stainless is better for most parts.
But I dont think they can improve it much more than it is.
So that it breaks down less. Or causes less damage to engines from high heat exhaust temps, or to much back pressure causing head issues, or excess heat in the head causing warpage.
The engines still seem to be not very long lived in general.
You can change the pistons to forged steel but the egr still pumps soot into the cylinder.
This is just something I've been thinking about. I do not work on trucks.

 

I mean with extensive scr maintenance it's possible.
But the earnings vs cost of operation do not make any sense.
And DEF is expensive in the USA.

 

Dont you mean Graphite iron block?

 

There is not many advances to be had for block material design I think. Unless carbon fiber or something would to be used.
A high nickel block would be good I think like the last of the Ford 302 blocks.
And they key now is saving weight even on blocks I think.

Also I believe common rail injection is a big factor in reliability being poor in modern diesels.

 

Probably thanks to VW.