Kind of a left turn here, but I just took over maintenance duties for the GF's Expedition. When I looked at the last service sticker, I just about stroked out... over 10k miles overdue for an oil chance. So I stopped at NAPA and picked up a Gold oil filter, and filled it up with whatever Mobil 1 calls it's high mileage formula. Apparently, it was also at least three quarts low (of a ~6 quart capacity) and freakin' nasty black. Ouch! Question: Do I just leave the oil and filter on for a normal interval, or do I want to shorten up the first change interval?
