- Joined
- Nov 29, 2009
- Messages
- 7,268
I thought only k&n did oiled air filters, so I didn't give it much thought when I bought this cummins with a cold air intake because it looked clean. Anyways, I Decided to change out the rubber couplings on it and that's when I realized how much dust this thing let's by. I checked once on my newer truck with the stock intake and it had just a tiny amount inside. Nothing that would even make your finger dirty. I'd imagine a little bit gets into the intake over time that can't be stopped opinions? Luckily I found this before the truck started burning oil.