You can use any filter you want as long as it is designed for your car. The Magnuson-Moss Act protects you from dealers claiming it was a non-OEM part that caused the failure as long as the part is designed as an OEM replacement.
http://www.ftc.gov/bcp/conline/pubs/...#Magnuson-Moss
You can just do a search on Magnuson-Moss and you`ll get all sorts of good info.
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