What is the general "rule" for oil change intervals on the 3.5L? I'm driving to work the other day and I thought "Hmm. I had the oil changed in this a while ago. I wonder when its due...." So I look it up and it was almost 5000 miles ago but the "oil life monitor" shows 51%. 10K oil change interval? Really now!
At the moment, its got Motorcraft semi-syn 5/30. Soon to be Mobil 1 EP.
I'm thinking with the turbos, 5k is more like it. What do others on the forum do?
At the moment, its got Motorcraft semi-syn 5/30. Soon to be Mobil 1 EP.
I'm thinking with the turbos, 5k is more like it. What do others on the forum do?