Oil Change Problem???
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Cross-Country
Joined: Aug 2007
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Oil Change Problem???
Recently changed the oil and filter in my 2008 F450 w/ 6.4 diesel. Truck has about 32,000 miles on it. Noticed that I drained out more than 16 quarts of oil, approximately 18 quarts. Oil change interval was about 7000 miles and six months. Did the same last Oct., about 17 quarts, but didn't give it much thought at that time.
I have replaced the drain plug with the Fumoto drain plug so I am able to drain oil into milk jugs and know how much drains out. This is how I noticed I'm draining out more than I put in (16 quarts). <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
fficeffice" /><o
></o>
<o></o>
I'm guessing that fuel is seeping into the oil and diluting it. Please tell me this is not so!!! How big a problem do I have? Need you pros to jump in and clue me in.<o></o>
<o></o>
This is my first diesel but this does not sound normal. What say you??<o></o>
I have replaced the drain plug with the Fumoto drain plug so I am able to drain oil into milk jugs and know how much drains out. This is how I noticed I'm draining out more than I put in (16 quarts). <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
fficeffice" /><o></o><o
></o>I'm guessing that fuel is seeping into the oil and diluting it. Please tell me this is not so!!! How big a problem do I have? Need you pros to jump in and clue me in.<o
></o><o
></o>This is my first diesel but this does not sound normal. What say you??<o
></o>
Super Moderator
Joined: Aug 2008
Posts: 37,384
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From: Frederick, MD
Fuel getting into the oil is usually caused by leaking injectors or the now famous regen issue to clean the DPF filter.
You can adjust your oil change interval to 5K, matter of fact I highly suggest that if you have a F450. You got the 450 to tow with right? So I would follow the severe maint. schedule.
So driving in the city, lower rpms will increase the fuel in the oil situation. Driving on the hwy, gettiing the regen over with it will help...or you may have an injector leaking.
You can adjust your oil change interval to 5K, matter of fact I highly suggest that if you have a F450. You got the 450 to tow with right? So I would follow the severe maint. schedule.
So driving in the city, lower rpms will increase the fuel in the oil situation. Driving on the hwy, gettiing the regen over with it will help...or you may have an injector leaking.
More Turbo
Joined: Nov 2004
Posts: 513
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From: WA
I also have the 08' F-450 and was planning on the 5K oil changes. I have only put on about 500 since I bought it and they changed the oil at the dealer before I bought it. Got a little time to wait. Man.....I love this truck.
Tuned
Joined: Jul 2007
Posts: 413
Likes: 1
From: Tennessee
Also, some of us have found that having the oil analyzed at a reputable lab will tell you the condition of your oil, how much fuel may be in it, and as some of us have found, small levels of coolant in it. They do a fantastic job of letting you know how well your engine is performing and where to look if levels of something in your oil is too high. I, and others here, use BlackStone Labs, but I'm sure there are others. They will mail you a free container to fill at your next oil change. Just return mail them the oil, and for around $22.00 they will analyze it and report to you it's condition and any areas that may need looking into.
Junior User
Joined: Jun 2009
Posts: 83
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From: Ashburnham, ma
Putting 16 quarts of oil in and draining out 18 quarts in 7500 miles is a quite a bit of dilution. I would definitely run it @1000 miles and send in an analysis. If it's that much at 7500 then it will show at 1000. We test our oil every 4 hours here on our patrol boat for FOD(fuel oil dilution). We've never gotten more than .01-.06%. 5% is dangerous for crankcase explosions. Good luck and I'm jealous over the F450.......
Post Fiend
Joined: Jan 2009
Posts: 6,521
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From: Greenwood, SC
Oil dilution is a problem with the 6.4 but it's cause is known so like with older motors it does not necessarily tell you that something serious is wrong. It is a grey line, the engine almost does it as a matter of it's normal operation.
It could be as senix states, injector issue but most likely it is just a fact of life with the 6.4.
Unburnt fuel is injected via the exhaust stroke down the exhaust pipe into the DPF during the cleanout cycle. The fuel burns inside the DPF to turn the collected soot into ash. During this process it is believed by several posters here that the raw fuel gradually works it's way into the crank case oil.
When I first got my truck back in 07 I went 10K between oil changes. The dealer service dept. told me that I needed to go to the 5K interval and have done so ever since. When the 6.4 first came out it was supposed to be a 10K interval, one of the "great" things about the new motor.
And by the way, those of you that don't drive your trucks daily, be sure you run the motor at least once/week up to operating temp. The injectors have been known to seize caused by sitting for extended periods of time.
It could be as senix states, injector issue but most likely it is just a fact of life with the 6.4.
Unburnt fuel is injected via the exhaust stroke down the exhaust pipe into the DPF during the cleanout cycle. The fuel burns inside the DPF to turn the collected soot into ash. During this process it is believed by several posters here that the raw fuel gradually works it's way into the crank case oil.
When I first got my truck back in 07 I went 10K between oil changes. The dealer service dept. told me that I needed to go to the 5K interval and have done so ever since. When the 6.4 first came out it was supposed to be a 10K interval, one of the "great" things about the new motor.
And by the way, those of you that don't drive your trucks daily, be sure you run the motor at least once/week up to operating temp. The injectors have been known to seize caused by sitting for extended periods of time.
Thread Starter
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Cross-Country
Joined: Aug 2007
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Senix: Yes I got the 450 to tow my 17,000 lb 5th wheel.
To all of you that have responded, thanks for sharing your experiences and suggestions.
Am now in TX and headed home to WI, some 1200 miles. Will follow up, as suggested with an oil sample analysis and will talk to my local Ford dealer as soon as I get home.
Will let you guys know what I find out towards end of this month.
Again, thanks for your input, I appreciate it.
To all of you that have responded, thanks for sharing your experiences and suggestions.
Am now in TX and headed home to WI, some 1200 miles. Will follow up, as suggested with an oil sample analysis and will talk to my local Ford dealer as soon as I get home.
Will let you guys know what I find out towards end of this month.
Again, thanks for your input, I appreciate it.
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Super Moderator
Joined: Aug 2008
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From: Frederick, MD
So with the F450 and towing use the severe maint schedule and do the changes at 5K and then filters at 10K is the recommendation.
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Senior User
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The frustrating thing about this is, no one, Ford, Dealer, or inquires to different sites, tell you the acceptable amount of fuel in the oil. I have analyzed my oil; the readings are as high as 4.5%. I change mine at 5000-6000 miles wither I tow or not, because of the fuel dilution.
Senior User
Joined: Mar 2010
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From: Sale Creek, TN
Are you, or anyone else that is using the Fumoto drain plug, concerned about something knocking off the drain plug since it appears to stick down below the oil pan?
Hotshot
Joined: Nov 2000
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From: Pflugerville, tx
Sam
Senior User
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I got one and it is well worth the $20.00. After installation it really does not hang down. If you look around under the truck alot of things will get hit before the plug.
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Senior User
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No...............My point was, if you are worried about knocking off the drain plug, it will take allot for something to hit it. Maybe all four tires suspended because the frame is high centered.