Originally Posted By: jwagner
Originally Posted By: badtlc
There is nothing wrong but if you really want to address/reduce the fuel dilution, I suggest running premium unleaded. It works for me and I do mostly city driving.
I guess I don't understand what you mean by "nothing wrong". Everything I have read says that 5% fuel dilution is too high and will result in reduced lubrication and increased engine wear. I suspect there's nothing malfunctioning in the engine and agree with you if that's what you mean, and that the dilution problems are a result of cold operating conditions and a driving mix that includes a higher than normal proportion of short trips. If that's the case, I think it is a design flaw that will show up over time in the longevity of the Skyactiv motors, especially in cold climates.
I do think that 4.8% oil dilution in 800 mile old oil constitutes "something wrong".
Is there increased wear as a result of the fuel dilution? I don't think you can truly conclude that despite the fuel dilution, the condition of the oil is leading to increased wear rates since you ran this oil on such a short interval.