Quote:
Originally Posted by bunk
read that the K&N is the same rebranded filter
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They're different, but almost all filters are manufactured by Champion Labs. K&N and Mobil1 included.
Cut it open at the end cap and see if anything is coming off. It's definitely not filter media, but could possibly be the glue used inside the end cap. It'd shock me if so, but only one way to find out. Post results!