qship96 wrote:how dumb was that to keep the same part number?????
First DIY oil change on my LS (first one I had the dealer do since it was winter) I stopped at Auto Zone and grabbed a M1 oil filter (cross-checking the part number in the paper book hanging on the shelf). I got home, drained the oil, pulled the old filter (filter location on the AJ35 is fantastic, btw) and grabbed the new filter to screw it on. Except it wouldn't thread. Compared old and new side-by-side...the new one had a completely different face...different return holes, smaller thread diameter.
Back at AutoZone, I looked over the book again and discovered than only Bosch lists separate filters for the Duratec 30 and AJ35. Everyone else lists the same part number for both...and it's the one Bosch lists for the Duratec. Bosch lists a completely different part number for the AJ V8. I checked all the brands on the shelf; sure enough only the Bosch matched my motorcraft filter.
Simply moronic, and a huge waste of my time. Turned what would probably have been the quickest oil change I've ever done into a big inconvenience. Lucky I had a 2nd vehicle on hand.
Now I know, though. So it shouldn't happen again.