Ok, ya'll got me worried with all this talk, as I want my Cummins to last a long time. I have the square factory replacement filter. I went out to check it again. Everything looked clean, but I did get a little bit of black on my finger when I ran it around the turbine blade area. Awhile back some nimrod at K&N told me I could use white lithium grease when I called them up because I couldn't find replacement sealing grease. Well I discovered he was wrong because I found traces of that crap in the intake hose shortly after that. I did find a suitable replacement grease to seal it with finally. I'm thinking maybe this black residue I'm finding might have been from the lithium sealing grease.
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I'm starting to teeter towards thinking I need to yank the K&N and put the paper back in
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I'm starting to teeter towards thinking I need to yank the K&N and put the paper back in
