Originally Posted By: demarpaint
Based on pulling heads with engines treated with MMO in the gas, I'm sticking with it. In the 200K Aerostar if I miss a few doses of MMO in the gas I can feel the idle quality gets a little worse.
I have been using MMO for about the last two years now. My truck runs great with it, but about a month ago I tried a little experiment. I filled up at the local Marathon station and did not add any MMO to my tank. I just wanted to see if there was any noticeable difference without MMO in my gas. I had problems with that gas. My truck had a rough idle, less power and generally ran like a sick chicken. I ran out about 8 or 9 gallons and it didn't get any better. I added 6 ounces of MMO and topped the tank off with 7-11 gas, and I also put about 3/4 of a pint of MMO (it was all I had left at the time) in my oil. I drove about ten miles and my truck returned to its old self. It started idling like it normally does and the power/get up and go/butt dyno was back to normal too.
I have no idea if I got some bad gas from Marathon or if the absence of MMO or a combination of the two caused the problems I had with the initial fill-up. I have read here about others who had problems with Marathon gas. I do know that my truck ran horribly without MMO. I can tell a definite difference in the way my truck runs and idles when I use MMO in the fuel. Like Damarpaint and countless others, I am sticking with MMO and will not skip adding it to my fuel again. I don't always add it to my oil, usually if I do that it is in the colder months for a bit of cleaning and to help with cold starts, but it does not get very cold here in central Florida.
One thing I have noticed is no matter what MMO users might say about their own positive experiences with MMO, there are always those who just will not change their viewpoint that they believe MMO has no beneficial effects and they want definitive proof or else it is just some kind of snake oil. I guess that is OK, everyone is entitled to their own opinion. I gave up trying to convince anyone about MMO long ago. I know it works great for me and that is why I use it. My only complaint is I wish I had discovered MMO much sooner.
When people here have questions about MMO I will sometimes post my experience with it, but I try to do that as merely a response to their question, not as a means to convince them to start using MMO. I have not replied to many MMO posts in a while because to be honest I got tired of the MMO bashing. It really is a two way street, there are products that others here use that I will not use at all, and I am set in my ways too. Like synthetic oil, for instance. I have never used any syn oil and am not about to start now. Good ole Quaker State 10W30 has a great add pack, it works great for me, it's not very expensive and my truck runs great on it.