[Colt]

I've ran K&N oil filters in the past, they worked fine for me. They are built good, and claim they filter down to 8 micron's.. Typically I run Motorcraft oil filters on the diesel's ( same goes for fuel filters ) though.. Thats all I run period in the 6.0's.

On the gassers, I run Mobil 1 filters.. No real reason why, I just figure that they make good oil, so I bet their filters are good too.. I either run Mobil 1 synthetic, or Royal Purple. The gas engine's look flawless when doing a tear down, so thats why I stick with them.

I dont run Fram even if thats all thats in stock, I'm not a fan. Most of the time when I've ran them in the past, the check valve doesnt work. Go to pull the filter off after a cool down cycle and the filter typically doesnt have much oil to speak of in it. Not to mention I've seen too many pictures of the aftermath after they came apart.