Mystic thanks for the kind words. This is unfortunately the internet, many people think they are experts, if not they are trying to sell product, or there are guys like myself that like to share and learn. I'm not selling product, and I'm far from an authority. I have been around the block a few times, and know when product works, because I've tried it. Then we have real hard working people without an agenda that are posting favorably about it. You can also see who is posting that hasn't tried the product and is clueless. I try and ignore them.
Jax_RX8 did a pretty good breakdown of MMO and explained what exactly each chemical did in it. I respect him, and can see from his writing skills he is an educated man. I am certain he was not planted by Turtle Wax here to push MMO. Search for him in the additive section and see what he has to say.
Then we have a few UOA's that showed MMO did well in engines too, although TBN was questioned. If you are a short OCI guy like me, or someone trying to clean an engine then you shouldn't worry.
People who want to try it that "fear" it will thin their oil, I have a few suggestions. Add a qt or two of a "thicker" oil, EG: engine calls for 5W30,use 2 qts 5W30, with some 5W40 or 10W40 and a qt of MMO. Or wait until winter, and reap the benefits of easier starting and a cleaner engine, You could also add a pint for the last 1000 miles of your OCI. The last suggestion will do some cleaning, but that was not how the product was intended to be used.
One last suggestion for people who are really in doubt, or afraid, DON'T USE IT!
One last thought, if your engine is clean, and in perfect running order, don't fret if you don't notice an improvement. OTOH if you live in a very cold climate you will notice easier winter starts no matter what condition your engine is in, at least that has always been my experience.
Good luck!