6.7 Liter Dodge Cummins 07.5-12 Discussion of 6.7 Liter Dodge Cummins Diesels

Fuel in Oil

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Old 01-16-2012, 09:04 PM
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Default Fuel in Oil

So my father bought an '11 cummins not to long ago, and its got about 2500 miles or so on it. He checked his oil and found it to be awfully high, come to find out theres fuel getting in his oil. Anybody heard of this problem before and could shed some light on it?
 
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Old 01-16-2012, 09:46 PM
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Originally Posted by colinheitshusen
So my father bought an '11 cummins not to long ago, and its got about 2500 miles or so on it. He checked his oil and found it to be awfully high, come to find out theres fuel getting in his oil. Anybody heard of this problem before and could shed some light on it?
Most likely it's the DPF filter going through the "regen" cycle,I have to change my oil every 2500 miles for the same reason.
 
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Old 01-17-2012, 10:20 AM
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Well hes only put about 2500 to 3000 on and he replaced the oil last weekend and this weekend its already a quart high he said. He wants to delete his emissions anyway, and has a dpf delete pipe just isnt sure what programmer he wants. So if he pulls his dpf would it clear up the problem?
 
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Old 01-17-2012, 10:29 AM
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this happens alot with the dpf trucks.
 
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Old 01-17-2012, 10:47 AM
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That is some BS They all do that!
 
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Old 01-17-2012, 11:30 AM
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I don't understand how DPF regen puts fuel in the oil.
 
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Old 01-17-2012, 03:29 PM
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Originally Posted by NadirPoint
I don't understand how DPF regen puts fuel in the oil.
Excessive EGTs to get the DPF hot enough to clean like a self cleaning oven. Larger trucks and the 2011+ Dmax engines have an extra injector in the exhaust to trigger it but the 07-10 trucks and 6.7 Cummins engines all rely on excessive amounts of fuel and other means (like a throttle in the intake) to increase EGTs to clean the DPF.
 
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Old 01-17-2012, 03:42 PM
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Burn more fuel to reduce emissions. That makes my head hurt.
 
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Old 01-17-2012, 03:57 PM
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Wow, i knew what the fords and GM did but i didnt realize thats what dodge did. Glad i have a 2nd gen 24 valve! The truck is going to the dealer tomorrow and i'll have to wait and hear how the dealer "fixes" the problem.
 
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Old 01-17-2012, 04:36 PM
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Originally Posted by NadirPoint
Burn more fuel to reduce emissions. That makes my head hurt.
Yeah only a politician would think that makes sense....

Originally Posted by colinheitshusen
Wow, i knew what the fords and GM did but i didnt realize thats what dodge did. Glad i have a 2nd gen 24 valve! The truck is going to the dealer tomorrow and i'll have to wait and hear how the dealer "fixes" the problem.
Yeah they all did it from 07.5-10, Chevy got the bright idea to move an injector and what is basically a sparkplug into the exhaust to burn up the DPF remotely. I am unsure if the Ford still uses an engine based regen, I know for sure the dodge does.

The dealer might reflash the ECM so it uses more throttle (make the engine run richer) instead of dumping more fuel. But the newer trucks like to make oil...not uncommon to see fuel percentages above 5%.

You want to see more nasty stuff...look at your EGR...



Supposedly this engine only had 600 miles on it..if that is true...YIKES!
 


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