Could I please ask for opinions of members on the Wix versus the Motorcraft oil filter for the Y Block screw on type oil filters. I ask because I recently had an issue with an AC Delco filter (not on a Y-Block) and am wondering if that production has gone off shore. Motorcraft still produced onshore? Anti-backflow feature of the Wix of any use on the Y-Block?

Thanks Ted:
That's exactly the problem I am having w/ the AC. On a new filter & oil change, and with any length of time between starts, it has really bad lifter noise for a few seconds then stops. I had not watched the oil pressure during the start but will on one last start on the AC. I will change out the AC with the Wix. 

You can see the anti-drain back on the Wix 1515 for Y-Blocks but I don't see it for the FL1A, is it deeper into the filter?
 

I usually cut open the filter can on every oil filter removed from my vehicles old and new. I will say the Motorcraft filters use stamped steel on each end of the element as stated above and the antidrainback valve is high grade, very flexible silicone material well fitted against the base. I never purchased an AC filter and found Fram to be of not very impressive quality with fewer pleats when compared to the Motorcraft filter. Also, I have found some anitdrainback valves made of  a material less flexible than the red silicone material used in the Motorcraft filter for what that may be worth . It has been quite a few years since I examined other brands of filters though.   Just my 2cents worth.............

64F100 57FAIRLANE500