Seems as though you're using great oils & filters so, why do you feel the need for extra additives with today wonderful oils especially synthetic oils?
I'm not being sarcastic, I'm just asking!
Mostly out of curiosity. To me, it's "fun". It's a few extra bucks that I know I'm probably "throwing away" to most people, but curious to see how the engine runs and feels. I'm curious to see what's in this Torco MPZ O2 additive. Of course, I'm anxious to see what the UOA looks like to see how wear metals look as well.
I've been running Fram Ultra filters and some microGreen filters lately on this Honda. But I have a stash of these Platinums and I like them, especially in the winter months because I feel that they have great flow characteristics (and just average filtering capabilities).