6.4 fuel in oil? - Ford Powerstroke Diesel Forum
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Old 12-09-2012, 06:40 PM
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6.4 fuel in oil?

How common is this problem in the 6.4? Read about it in diesel power magazine and there happens to be a 6.4 reasonable priced in my area but oil dilution is very worry some for me. Is the specific to particular year or build date? Is there anyway to fix or prevent this from happening? Lots of questions which makes me rethink even buying one but wanted to hear some feed back from you guys.

Last edited by scagmanf350; 12-09-2012 at 06:45 PM.
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Old 12-09-2012, 06:48 PM
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Yes its common, its caused by the DPF, at the end of the combustion cycle fuel is injected (which isn't burnt in the cylinder, for the most part, as it is meant to burn when it reaches the DPF). That's why its important to change oil as directed when running then stock. The best way to cure or prevent this issue is to do a DPF delete and install aftermarket tuning. Its a trait of all truck that are equipped with a DPF, not just ford.
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Old 12-09-2012, 06:55 PM
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When my 6.4 was stock at 4k miles my oil was 5% diesel fuel.
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Old 12-09-2012, 07:56 PM
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So if you delete the dpf you no longer fire fuel during the combustion cycle correct?
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Old 12-09-2012, 08:17 PM
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Yes there will be no more post combustion injections of fuel after you delete and tune.

On a side note before I deleted, my last oil change (with 5500 miles on it) had 2.5% fuel, my first oil change immediately after I deleted (with 10K miles on it) had 0.5% fuel.
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Old 12-10-2012, 04:16 AM
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My first oil change after delete also had no fuel in it.
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Old 12-10-2012, 09:23 AM
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Same here. As soon as the DPF fell on no more fuel in the oil
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Old 12-10-2012, 09:48 AM
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Dang yours fell off too?
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Old 12-10-2012, 09:49 AM
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Quote:
Originally Posted by strokinpower View Post
Dang yours fell off too?
Ya not sure what happened lol
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Old 12-10-2012, 09:51 AM
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I know mine when mine fell off it was crazy because at the same time $1500 fell out of my bank account lol
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