One issue with the Motorcraft brand filters is, during COVID, the manufacturer that made all the Motorcraft filter closed. So they were very hard to get for a while. By now, a new source has been found, but I bet they are still behind.
My Walmart stocks a decent selection of Motorcraft filters and normally has the 1995 on the shelf and the one for my 6.0 (I don’t know the number, but it‘s the only one that is in the $25 range, so I just grab it, plus it’s a cartridge filter, not a spin on, so it’s easy to pick out). But the 500-S for my 3.5EB seems to be the one that sells out quickly…. I think it is the most common one…. Like in the good old days of the FL-1A that went on what seemed like everything Ford made…….
My Walmart stocks a decent selection of Motorcraft filters and normally has the 1995 on the shelf and the one for my 6.0 (I don’t know the number, but it‘s the only one that is in the $25 range, so I just grab it, plus it’s a cartridge filter, not a spin on, so it’s easy to pick out). But the 500-S for my 3.5EB seems to be the one that sells out quickly…. I think it is the most common one…. Like in the good old days of the FL-1A that went on what seemed like everything Ford made…….