Good to hear that the filter is doing well.
I am Mopar man so the under dog is a friend of mine.
i have never run a 7900 but I have tossed them around at the tire shop in Covington(thats who sells em).
Have herd other loggers speak about them, fast but not solid.
Someone send me theirs & let me put some time on it, see what I think
Rep'd.