Quote:
Originally Posted by Blind_Squirl
This is for the Doctor. I have about 5K on my new 2008 6.4 and I think I am going to change the factory oil this week before pulling my 23' trailer on vacation. I am curious about the fuel in the oil, once the engine is broken in will that still be an issue?
Thanks, Steve
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Break in probably has little to do with fuel dilution. To recap my post, some fuel dilution is going to occur and should be considered normal. Your findings will vary depending on the variables I mentioned in my previous post. If you keep a log, make an extra note as to the ol level before changes and track your levels. Expect an increase in colder weather. As always, I recommend filling your crankcase to the lower end of the cross-hatched fill mark on your oil level indicator.
To take this a step further, I would guess that 1-3 quarts is normal for a 5K oil change interval from what I have seen. More than that you should consider a trip to the dealer for investigation. The common rail fuel system can leak fuel which directly affects oil dilution. Performance issues also result in more frequent DPF regenerations which also will affect fuel dilution. If your engine has a performance issue that results in over fueling, misfire due to poor fuel quality, electronic or mechanical failures this will contribute to fuel dilution greatly.
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