Now that I have a second Crossfire at home, and it's basically a daily driver to my Roadster's weekend/fun use, I'll be buying more oil filters. A few years back I bought a 6 pack on ebay and just found the same deal once again - 6 of the proper Mann filters for $47.94 shipped. At basically $8/unit they're a deal. http://www.ebay.com/itm/Mercedes-Mann-Engine-Oil-Fleece-Filter-Kit-w-Seal-Rings-Sold-AS-6-HU7185X-/351441667873?hash=item51d38e4721&vxp=mtr