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STP air filter = new diesel particulate filter!!??

lezmark7

lezmark7

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Two weeks ago my regen notice came on for a minute then went out. Then a new notice came up saying that there was an issue with the diesel particulate filter and that performance would like be lower. See the dealer. Took it in and they have told me that because the air filter did not breath (too thick) that it caused the engine to suck oil and into the exhaust system. The diesel particulate filter needed to be ordered and I was told it was a $6000 part. Got it back today and it runs great, I think better, its hard to really tell as it is a pretty strong motor. Does this all sound right? They only charged me for an oil change and new air filter and warranted the rest.
 
with all of the sensors on these things, i would think you would have had some warning going nuts if the air flow was insufficient given that there are two connections on the air box connection to the engine.
 
Use quality filters, people. Sheesh. OEM is best.

Sounds like a bunch of crap to me. But, I wouldn’t buy an STP filter either, so

Biggest BS red flag to me is the turnaround. No way they got you a new DPF in two weeks.
 
Rockcrawlerdude said:
Use quality filters, people. Sheesh. OEM is best.

Sounds like a bunch of crap to me. But, I wouldn’t buy an STP filter either, so

Biggest BS red flag to me is the turnaround. No way they got you a new DPF in two weeks.
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They probably sent it off for cleaning
 
If oil or coolant makes it to the DPF, yes, it will generally need replaced depending on the amount it absorbs.
 
The air filter would have to be really restricted to cause oil to suck past the turbo seals or maybe the crankcase tube is plumbed into the intake? Did they replace the turbo?
Who knows I had a fram air filter and got some kinda code. Threw it away.
 
H3LZSN1P3R said:
It can be cleaned out instead though
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Definitely can be cleaned and restored for a much lower price. (a few hundred, not thousands) So this is the same, but different. We have a fire engine that is 11 years old with a Cummins (no DEF). It was giving us an error quite regularly and needed frequent regen. We removed the filter and took it to a shop in Chesapeake, VA and the process for rehabbing those things is pretty cool. All automated process. It's blown out, placed in a kiln and super heated for hours, then blown off again. I know that isn't apples to apples, but it can certainly be done.
 
Yes, they can be cleaned unless the quantity of oil or coolant is excessive. If too much is taken in, when you try to bake it, it bakes the coolant/oil into the substrate and reduces its ability to allow air flow.
 
Darmichar said:
Yes, they can be cleaned unless the quantity of oil or coolant is excessive. If too much is taken in, when you try to bake it, it bakes the coolant/oil into the substrate and reduces its ability to allow air flow.
Click to expand...
Thats why you have to specify if its contaminated then they will hot flush it for a few hours then set it to bake
 
Oil comes into the exhaust and therefore DPF anyhow. The piston rings let some into the combustion chamber, valve stems into the intake and exhaust port and the turbo lets some into the exhaust,
If you had a plugged air filter that could mean that the engine is running rich but that should also be reducing the diesel supply on a modern Diesel.
You should also loose max power with less air if the filter is plugged.
Dangerous is that for the Turbo, it could try to make a certain boost pressure but has trouble to get enough air, might spin the Turbo too high.
What is the mileage on that truck or filter?
 
Bottom line. don't run junk filters in your truck.

Mopar, Fleetguard, WIX, Baldwin, Donaldson, even NAPA gold (reported to be WIX) are all good. Fram, STP and the like are junk.
 
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