Thanks for the info. The Challenger I ran as a kid had the felts in it and we would change the oil and then my Grandpa would engage in some ritual where you took the top off of the filter, move a plug from here to there and backflushed dirty oil all over the side of the tractor. Even as a kid, those felts just didn't seem like a very good way to filter oil!

I admired your Challenger at the Baraboo show and saw it heading for the parade, sure looks and sounds great!

Thanks,
Joe