A recent sample analized by blackstone labs indicated 3.5% diesel in my oil with 5000miles on it. I think i remember a TSB on this can anyone help? Please advise.

 

Here is a good start: https://www.ford-trucks.com/forums/5...ch-folder.html

That is the tech folder at the start of this. There could be a couple of different causes that does not help with the fuel in oil situation.

Tell us how you use the truck. I you do a lot of in town driving while regening, that hurts and tends to lead to fuel in the oil. So can extending idleing.

 

very little city driving and no idling. It is used to pull a 15k fifth wheel and this is mostly interstate driving at 60 mph.

 

did you check the tech folder and see if you are covered by a limited recall of some of the injectors?

Any codes on the motor? Sounds like maybe a overfueling problem.

 

3.5% @5k is not that rare for a truck with a dpf and regens still in place. The fuel injected in the exhaust stroke for regen washes the cylinder walls, and some fuel will make it into the crank case. It is a very small amount but adds up quickly over the course of an oil change. A couple of guys doing regular oil analysis on another forum consistently had fuel in oil upwards of 5%. They deleted the DPF (and regen process), and went down to 0.2% or less on the next change.

I would stick to the 5k interval and not go longer. (The 10k interval in the manual is crazy with regens still in place.) If you were checking your oil and getting 3.5% around 1-2000mi, and had a very over-full crank case, THEN I'd be worried.

I think Ford was telling people that acceptable levels were around 5% or more, if I remember correctly, and would do nothing about it.

 

Ford was saying 5% for the 6.0. I wonder if that has changed with the advent of the DPF?

 

I don't care what Ford says.. Fuel in crankcase is just not a good thing.. I am right at 4500 miles since my last oil change and I bet I am 2 or 3 quarts over full mark...

 

Welcome to the world of REGEN! Filling crankcases with diesel fuel since mid 2007 Delete it and be done with this issue!

 

If you are 2 or 3 qts. over you have more problems than the dpf system.

 

Not always the case. Owners that use extended oil change intervals can have that much fuel in the oil. Saw one last week that did not have a fuel leak anywhere on the motor (injectors were good, no fuel rail leaks, pump was running up to snuff, etc) and almost 20 qts of oil still came out of the pan.

 

i just did a change last week on mine, i went over the 5K mark as I was on the road. 6500 miles, all I got was 14.5 qts. usually don't measure it but this time I thought I would just to see.

I let the truck sit for about 20 mins, pulled the filter, dropped the plug and let it drain another 20 mins or so.

guess i don't know how to make oil

 

oil growth in a 6.4 is very normal. with that said if you have that much delution then I would worry a little bit.
the things that will cause this is high idle, leaking pump, leaking injector, leaking injector lines. I have seen all of them do this.

The other thing that has been knowen to cause this is aftermarket air intake systems... Im not gonna get in to why that is and all the ins and out of o.e.m. filters vs aftermarket but trust me on this on.

 

where do you find these oil analysis companys? never heard of them before getting my 6.4 ..

Sam

 

I have the F250 SRW CC 6.4 job 1 build date May 07...Truck is still All stock.. I have right at 19000 miles... I have checked to see if I was on the list of the bad injectors but I was not... I change my oil myself at 5000 miles so I am going to measure what comes out to get a true accurate reading of how much over 15 qts. I really am... I'll let yall know what I find...

 

This is the one a lot of people seem to use...

Blackstone Labs