Originally Posted By: sayjac
It's true that technically speaking the MC is not the 'OEM' but the OE'S' part. Rightly or wrongly, some here use the terms interchangeably. However if one goes to a 'Ford Dealer' for a replacement dealer filter, it is the Purolator made Motorcraft filter that one will purchase/recieve. So while the OP technically misidentified a letter I think most understood the point being made.
And while being technical, it's also true that Champ Labs has supplied/produced the FoMoCo assembly line filter for quite some time. That would include before being purchased by Rank Grp and before Fram's subsequent purchase by the same. Now that Champ is under the UCI/Fram it's under 'Fram filtration banner.' Also a similar situation now for the Champ Labs made ACDelco.
Important to also note technically speaking, that the FoMoCo oem construction is similar to the Motorcraft filter construction in that, it too uses thread end bypass, silicone adbv and 'metal' endcap construction. So while technical speaking it's under Fram filtration now, it still uses Champ Labs construction.
Nice!! That's exactly what I meant.
Also, just a side note, I would be hesitant to use OEM Champ filters, as for the first 2500 miles on that filter when the truck was brand new, I had some start up knock at times. With the OES MC filter, no start up noise ever in many, many miles. (About 85 filters worth)