Join Date: Mar 2008
Feedback Score: 0 reviews
quote "I assume that this is fuel getting into the oil?? If so, other than pulling an oil sample, how can I know what is going on? It seems that the latest response at the Ford dealers nowadays is: "Oh they're all doing that, don't worry about it"
The new Cummins 6.7 does this too. It's caused by active regeneration when raw fuel is pumped in during the exhaust stroke to get the DPF nice and hot. Guys driving on the highway pulling a load won't have much problem because they will rarely have an active regen. The EGT's stay high enough while pulling a load to keep the DPF pretty clean.
3% fuel dilution is not good. If you aren't either pulling a lot or running mostly high speed on the highway I'd recommend an oil change interval no greater than 5,000 miles. Maybe even 3,000 mikes if all you do is grocery store runs.
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