Amsoil oil bypass kit
 

Anybody use this product on the 6.7 cummins

Best,
Steve

yes. i'm currently at 5300 miles on this oil change and analysis is still saying the oil is good. i'm bone stock, so i swap the filter every 3-5k and change the oil every 10k whether it needs it or not.

could only get 2 of the 3 mounting bolts in securely, though. that back one is a pain in the rear, as it's partially under the intake.

also, if you plan on adding a GDP mk2+ 2um fuel filter after your factory filter, things get complicated because they both mount in the same place. a dual pump would mount there as well. so there's that to consider. it can be mounted elsewhere with some creativity and line swapping.

one complication i've had is oil leaking from the return line in the supplied replacement filler cap. solved that by removing the fitting and re-wrapping it with thread sealer and cranking it in there all the way. there's also a bit of a clearance issue with the hood liner, but some quick work with a razor knife fixed that, and it's not enough to contact hard parts even if you don't trim the liner.