The cotton junk probably does a better job of trapping and holding a larger capacity of contaminants than a pleated filter. The Mann filter has a pleated paper section, the sotton I assume for coarse filtering, the pleated paper for finer filtering.

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85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

Might be the case, but then why don't we have the filtration capabilities somewhere. I'd buy it if I could find what it's rated to filter. I will grant them that they PACKED that sucker.

I'm going to fire off an e-mail to them and see if I have better luck than Diesel911.

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"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes

1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod

2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die."