What kind of oil filter do you guys use?

Mopar L-128. I still use the old canister oil cleaner! It has a huge standoff pipe in there. Oil stays in there for weeks.
Purolater, Fram-Mopar...all the same....cardboard seat for the anti-drainback valve. Notice the Fram design has the cardboard end plate, cheap-azz!
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overview

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check out this site, great stuff. Oil Filters Revealed - MiniMopar Resources
I was fixen to buy another K&N but now might get a Bladwin