Quote:
Originally Posted by olrocker
There’s nothing wrong with the engines themselves. The actual engines are reliable and towing ability is still superior.
I’m talking about all the other added crap beyond the DEF. Have you actually seen the complete fuel and emission system of any of your modern diesels? I mean those built in the last 10 years, not 20 years ago. The DPF (diesel particulate filters, essentially their new catalytic converters) alone is about $7k for the part without labor and those things are going south especially on commercial Ram/Sprinters and like crazy, just after the warranty is out. They clog up when idling.
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A DPF for a 2.8L Chevy Colorado is like <$1,000 and one for a 6.6 Duramax is $2400 on the expensive side. Other DPF's for other common trucks are less money. Labor is just welding it up like a cat.
I've never heard of one clogging with regular use and regen cycles. Maybe early in a model cycle, GM has adjusted the regen frequency but that was a long time ago.
The DPF is post-manifold as is "DEF". The additional equipment for the engine is the addition of an EGR, similar to how gas engines have had EGR for a long time.
In the last 10 years I've had a GM 2.8 LWN diesel and a 2021+ Cummins B9. Also a 6.6 2006+ LLY Duramax with DPF, but that was pre-SCR.