6.4L making oil - Ford Powerstroke Diesel Forum
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post #1 of 19 Old 08-25-2009, 11:59 AM Thread Starter
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6.4L making oil

FYI

I own a Diesel repair shop in Colorado and mostly work on Powerstrokes. We have noticed that every (all) 6.4L that comes in for an oil chage is 2 to 8 qts over filled with oil? It is not oil but fuel in the oil, from what we have heard Ford engineers are saying this is normal (I say B.S.) They are saying this so they don't have to address the problem. If you own a 6.4L this will become a serious problem in the future with seal/gaskets blowing out and bearings washing out. This will most likley happen when your warranty runs out.

I just want 6.4l owners to be informed about this issue.

thanks
John
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post #2 of 19 Old 08-25-2009, 12:06 PM
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Welcome to the site Its a known fact. The regen process causes it. DPF deleted trucks dont suffer from this issue

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post #3 of 19 Old 08-25-2009, 03:18 PM
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post #4 of 19 Old 08-25-2009, 04:12 PM
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Quote:
Originally Posted by dieselte*****o View Post
FYI

I own a Diesel repair shop in Colorado and mostly work on Powerstrokes. We have noticed that every (all) 6.4L that comes in for an oil chage is 2 to 8 qts over filled with oil? It is not oil but fuel in the oil, from what we have heard Ford engineers are saying this is normal (I say B.S.) They are saying this so they don't have to address the problem. If you own a 6.4L this will become a serious problem in the future with seal/gaskets blowing out and bearings washing out. This will most likley happen when your warranty runs out.

I just want 6.4l owners to be informed about this issue.

thanks
John
Thanks for the info. We all know all about this. We have our own ways of fixing this. I was getting quite a bit of this when my truck was stock, but not any more (sans DPF).

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post #5 of 19 Old 08-26-2009, 05:58 AM Thread Starter
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I'm glad to see people aware of this issue, I wish I had more time read the forums but I'm too busy fixing 6 liters all day. It's a good thing I can work on them because I couldn't afford to one other wise.
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post #6 of 19 Old 08-27-2009, 11:51 AM
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Quote:
Originally Posted by dieselte*****o View Post
I'm glad to see people aware of this issue, I wish I had more time read the forums but I'm too busy fixing 6 liters all day. It's a good thing I can work on them because I couldn't afford to one other wise.

Just do what i do with mine, don't use it

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post #7 of 19 Old 01-12-2013, 03:58 AM
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6.4l Making oil

I have 6.4l in my truck and I would like to know if there is a fix for the fuel in the oil, with out having to do a DPF delete? Also I have another issue that when I am driving around in the city i have no issues till I get out on the highway and hold a steady limit for a hour or so and then I loose throttle response. It has happened to me 4 time within 1 hr before and the other 2 times where spuratic on a trip back from Florida to TX. I am short of trading it in if i cant get it fixed!

Last edited by LilRanger; 01-12-2013 at 04:06 AM.
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post #8 of 19 Old 01-12-2013, 04:11 AM
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Quote:
Originally Posted by LilRanger View Post
I have 6.4l in my truck and I would like to know if there is a fix for the fuel in the oil, with out having to do a DPF delete? Also I have another issue that when I am driving around in the city i have no issues till I get out on the highway and hold a steady limit for a hour or so and then I loose throttle response. It has happened to me 4 time within 1 hr before and the other 2 times where spuratic on a trip back from Florida to TX. I am short of trading it in if i cant get it fixed!
What helps to minimize the fuel in oil on a stock 6.4 litre is to let the regen cycles finish. Shutting the truck down during regen is the main reason the fuel ends up in the oil.

Not to sure on your other issue.

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Last edited by superduty6.4; 01-13-2013 at 03:55 AM.
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post #9 of 19 Old 01-12-2013, 10:19 PM
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Yeah!
Thanks for sharing! it's a very known issue with the 6.4L

Nelson
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post #10 of 19 Old 07-09-2013, 07:34 AM
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DPF Deleted fuel in oil

Quote:
Originally Posted by Dave View Post
Welcome to the site Its a known fact. The regen process causes it. DPF deleted trucks dont suffer from this issue
I beg to differ. My 08 has been at the dealership since 27 Jun with this issue and I'm DP back deleted running a Black Maxx for over 2 years. Ford can't figure out how it's getting in there but I'm not saying they are the best diesel tech's either at my local dealership. Figured the engineers would have come back with something by now. I've pretty much read all the possible diagnoses on here or other diesel forums.

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