The 6.7 most likely wont make oil since the fuel rail is external and so have the injection lines and solenoids

 

far as we can tell, the same regen process is used in the 6.7.. dpf filter to capture the soot, and injected fuel during exhaust to burn it off..

some DEF used as well..

so, it will probably have the same ring bleed by issue that causes fuel in oil..

Sam

 

Did the fuel get back into the crankcase via the EGR? because the 6.7L does have alot smaller of a egr return system as the DEF takes alot of load off the EGR system.

 

Any dpf truck utilizing in clyinder technology will pass fuel into the oil through the rings. Thats normal for the trucks engine. What im talking about is the mass rpoblem with getting fuel into the oil from the pizios on the injectors and leaking fuel lines. Last week i had 4 buses come in with oil level 3 gallons overfull. Be aware that i have a 2010 6.7 cummins and it does the same thing as the fords do with fuel pasing by the rings.

 

I guess with a little time we will see if ford knew of this problem in designing the 6.7L and did something to help with it.

 

K. I haven't seen any reports of the 6.4L with stuck injectors..

Sam

 

What is your take on the long term effect with the fuel in the oil.

 

Im sure they did. The 6.7 is a very cutting edge engine. I seriously was going to get a KR f350 but not a fan of the revese flow heads or the water to air cooler. Plus the urea system is too much to delete. Thats why i went dodge for ease of deleteing the dpf and egr.Very easy on the cummins. Still own fords though and always will

 

Long term effect on the fuel in oil has already taken its toll in my feild. Engines have been failig left and right. Had some blow tips off run off wide open, blow rods out the side the block. The fuel in oil is just a bad thing to have happen since diesel is not highly fefined my nature and also even worse with ULSD. Having more than the 2% in your oil will start to wear ever component out. I change my oil at 3000mi. May be expensive but its alot better than blowing your enigne up. And if you ask chezit im pretty sure he has had simialr issue with the 6.4 leaking fuel into the oil through the inbjectors externally. The 6.4 injectors are a bad design and i have been working right beside navisart trying to elimiate the issues the 6.4 is having. We have the largest quanoity of 6.4s in the U.S. I cant really realses any more info whats going on just rest assure its being taken care of and so is the programming. The one issue i can tell you is that the ring pass by is hard to control since all vehilces run in different areas and are drove different. Trying to program something for a million different applications is hard. Its better than going the easy route and using urea and adding tons more parts. Navistar is really fine tuning the in cly technologys with egr and such. in the next 4 years look for most of your on highway trucks and such to be all new internationals. Once the learning curve is taken care of these engines will not be comparable to anything

 

just do a dpf delete and forgot all this fuel in oil thing all together. I have 27K on my truck now and havn't seen a drop of fuel in oil since i did the delete at 6k. As another plus fuel mileage goes us and she runs way better. Its a easy fix.

 

I'm jealous of your dpf delete. Those of us who have to bend over annually for an emissions test however do not have that option. I'm looking forward to seeing what the aftermarket comes up with for the 2011's. It might be worth it to re-install/uninstall the dpf every year.

 

Well my truck was built on Friday the 25 and should be here next week. I will be buying the bumper to bumper extended warranty 100,000 mile for 2,200.00, has anyone else bought this for there 6.7?

 

I will buy it once i get some letters in the mail. I waited on my last truck and saved around 900

 

What is involved in the dpf delete?

 

you need to buy a programmer that stops the regens. Then you remove the dpf. The only issue is your warranty could be at risk but i think this is a low risk provided you treat the truck like it should be treated. I really didn't want to do it but the benefits definitely out weighed the negatives for me. I would for sure do it all over again.