Hi Guys. I just pulled the filter at 13K on the Rogue as it was a bit low on full throttle power and the OE filter was saturated with oil on the dirty side. Wondering if any of you guys noticed if the Japanese filters in the Nissan seemed to be oiled from the factory. This 2.5 has a big plenum for oil/air separation not near the filter box so I don't think it's engine oil. It doesn't smell like engine oil either. Thanks. I might clean the MAF that's a few inches from the TB, next.