We have the MMO lovers and the MMO haters, and that is not a problem. What bothers me is people who have never used the product chime in, this goes for any and all products. I've used both products, I am certain MMO kept my engine clean. All A-Rx did for me was slow down a small leak, please note slow down, not stop.
You can't clean something that is already clean. So I'm not knocking A-Rx, since I never used it in a dirty engine. I am just stating my opinions and observations in a Thread about MMO. Sad thing is A-rX should have never been mentioned in this thread. But that happens and I tend to drift off course myself too.
Based on what I've read here A-rX is a good product, so is MMO. Opinions vary, these are mine. Use what you like, I am happy to be a member on this site, and have learned a lot, but like everything on the Internet, I take a lot of the info I gather with a grain of salt.
Thanks for the lard comments I was trying to figure out where that was headed. :)