Also, Motorcraft 10W30 diesel (dino) oil wasn't much better than the 15W40 was (dealer stupidly changed out the PBX once in winter when it was in for something else).
Having some trouble finding the dino 10W30 locally. The Wal-Mart near me does not appear to carry it and Advance Auto Parts wants $14.99 a gallon for it and only had one in stock. I just might end up with the T5 or T6. I'll keep looking...
