I don't want to get in a fight over something so stupid as this. Sorry if I sounded a little smug there.
I know darn well why they don't use them.
As for filtration, I just prefer paper. Simple as that. Other people can use what they want and do what they want to their engines. It isn't up to me, nor should it be. I only offer what I know, and whether anyone chooses to accept it is entirely up to them.
