I have a Volant with PowerCore on my 5.7l Ram. I replaced the filter at 100k, and the second one has 80k and filter minder hasn't made it to the first line. I know that they are usually used on diesel engines, but Filter Minder recommend placing the filter on a gas engine around 12in.
I just cut up five more M1 filters, and some other random filters. I had two more M1 filters that the end cap just popped off without any real effort. They also seem to have a lot of random black glue just floating around on the end caps.