I really just wanna experiment with it this winter cause these engines have so many lifter rattle issues at start up. A majority of them have problems with the ADBV's not working right on most filters made to fit them, but its rumored that chrysler has found that some of the blocks had the oil passages to the lifters made to big. I don't know if this is causing the lifters to bleed down faster or what. Anyways, I had the lifter rattle at start up for a second or so at start up this winter, no matter what brand filter I used, but once the weather got a little warmer, it went away, then when we would get a cold spell again, it would come back. I don't think its gonna hurt anything, I just wanted to experiment and see if I could eliminate it.