It would be a personal thing. I take very good care of my vehicles. I also believe that engines that see the kind of use mine do, NY severe service stop and go driving will eventually get dirty. If I lived where I drove 50 miles a day to and from work under perfect conditions my thinking might be different.
MMO cleans, and cleans well, if you look at UOA reports it seems to do well as an add to oil, however it does reduce TBN. That doesn't matter to me because I will not do extended OCI's.
I do not add MMO at every oil change anymore. But I do run it for a full OCI during the winter in 2 vehicles. I also use it as top up oil in my Aerostar, and have been know to add a pint 1000 miles before changing my oil if I didn't run the full qt. I'll also skip it and try other products from time to time. I'm using Lubro Moly in one of my vehicles at the moment so I didn't add any MMO.
I mentioned a college buddy a while back who used MMO in a Toyota at every OCI. 200,000 + miles later I helped him change a VC gasket, the engine was spotless. His father had been using MMO since probably the late 1940's, early 1950's, and passed on the tradition to him. A qt at every OCI for this guy, still till this day, I met him in the 1970s.
MMO cleans, and cleans well, if you look at UOA reports it seems to do well as an add to oil, however it does reduce TBN. That doesn't matter to me because I will not do extended OCI's.
I do not add MMO at every oil change anymore. But I do run it for a full OCI during the winter in 2 vehicles. I also use it as top up oil in my Aerostar, and have been know to add a pint 1000 miles before changing my oil if I didn't run the full qt. I'll also skip it and try other products from time to time. I'm using Lubro Moly in one of my vehicles at the moment so I didn't add any MMO.
I mentioned a college buddy a while back who used MMO in a Toyota at every OCI. 200,000 + miles later I helped him change a VC gasket, the engine was spotless. His father had been using MMO since probably the late 1940's, early 1950's, and passed on the tradition to him. A qt at every OCI for this guy, still till this day, I met him in the 1970s.