My experience with mmo is that it does increase gas milage. I've been using it since Dec. '09, I do not claim milage increases by the fill-up, only by an average. My avg, increase since Dec. in an increase of 3 mpg. Thats an overall average.
Also my one car would at times drop a cylinder "thats what I call it anyway" while sitting at a stop light. This was very random, some times maybe once at a light, sometimes not at all, sometimes 3-4 times at the light. Since using MMO this has gone away entirely.
Do I know what the SAE tests show, don't know if they even did any tests, don't care if they did or didn't. Only thing I know for sure is it works
BTW, I don't work for them, never have, never sold their product, don't intend to either. Neither do I know anyone associated with MMO. I'm retired now for 8 years since I was 58, and do not plan to go to work for anyone.
For what its worth MMO is made in Michigan City, Indiana