Does the DPF for a 6.7 ever have to be replaced as a part of routine maintenance and if so how much does it cost?

 

It's first scheduled service is at 120,000 mi and that is just a vaccum out prossess at the dealer. Unless you have some catastrofic event before that you should be good to go.

Bruce

 

Thanks Bruce, that makes me feel a little better. I think once all the bug are fixed with the 6.7 it's going to be one heck of a unit. Mine pulls outstanding. It's just the regen, tons of sensors, along with the PCM/ECM that makes old heads a little unsure of the durability/reliability. If DC is not looking into the issues hopefully after markets companys are.

 

I think DPFs are going to be a big joke and huge ripoff for the public - thanks to the EP(F'n)A!! I take that back - I KNOW they will be! I maintained a BIG catalytic oxidizer at a pill factory for 17 years and that one piece of equipment was by far the highest dollar maintainence item at the plant. Cat cell technology isn't there yet! We tried the latest and greatest cells and still couldn't get good life out of them. Cell life (or rather, end-of-life) was determined by a precisely controlled test to measure the "conversion" of the compounds that entered them. Even the efficiency of the state-of-the-art cells dropped off so fast it made me darn glad I didn't have to buy those things. And that poor results was happening with relatively clean burning IPA and SD3A alcohols. I can imagine how quickly the efficiency of the DPFs will drop off. I wish the EPA had a clue before shoving garbage like this down our throats! Craig

 

A Catalytic Oxidizer and a DPF are two different animals. the DPF is basically a trap for the PM in the exhaust flow. they will outlast the truck, but they will have to be removed and cleaned of the ash when they are full.

 

That was also the problem with the cat/ox. Efficiency drops off so badly in spite of all the cleaning efforts. No regen method could get the efficiency back - the controlled high temp burns or any amount of chemical (acid or base) cleaning did it. I thought of a cat/ox when I read how the PDF regenerates but it's probably not an exact comparison. Craig

 

both filters are geting replaced on mine. 4400 miles on it(still has the paper plates). the truck would have been out of the shop today but they are on back order. i should have it friday or monday. but the fact that they are on back order must meen that there are alot of them getting replaced. that truck hasnt been out long enough for one to have 120000 miles on it. the desiel tech at dodge told me once DC gets there crap together and the system is working like it should, these filters will have to be replace between 150000 to 200000. all of that just depends on how you drive it and the cleanest of the fuel you burn.

 

IIRC on semis the the EPA mandated that the DPF has to have a minuim life of 435,000 miles so I sure hope it will last as long on the smaller engines we have but who knows at this time.