Diesel additives for DPF/EGR longevity

I wish all turbos were water cooled….. The MB OM642 in the USA is oil cooled only, they are water cooled in Europe. I have one in a 2013 Mercedes GL350 and I cool it down when I come off of the interstate for 2-4 minutes.
That's asinine even for MB, hell that's something VW would do. :ROFLMAO:
 
Our busses have up to 500k miles. The vast majority have a functional DPF. The oldestr ones are most likely to have a dpf warning on the dash, but even that doesn't mean they smoke.
 
Not that im aware of. There is a new law coming out that requires the trucks to be smog tested every 3 months though .
Thanks for that. I know there was some sort of "Phase out" plan a few years back b/c I was seeing all sorts of older trucks being sold out of CA.
 
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