Re: Problem with oil change?
Yes, I believe the Motorcraft is a synthetic blend and this is not. I didn't think that would make so much of a difference. Dang those good deals can get ya sometimes. I was feeling a little poor that day or I wouldn't have gotten it.
I'll try switching back to a Motorcraft filter and see if that makes a difference. Would it hurt adding a quart of PEAK synthetic oil to it and making my own blend?
Actually, I think the Motorcraft Oil I used for the first 100k or so was not a synthetic blend, but the more recent ones have been. Can you still get non-synthetic or non-synthetic blend Motorcraft oil?