After reading the thread that asked what MMO does for engines I had to post this one. I was asked by an elderly gent if I was interested in his car that had been sitting for 30 years. It's a 1970 Buick Estate Wagon with 18,801 miles on it. Sure the battery was dead, tires flat, etc but he had a relative inflate the tires and get it cleanout around so I could get to it with another fresh battery. I yanked the old one, replaced with another one. The air cleaner had been plugged with a rag and I also noticed the exhaust syatem had rusted off at the front pipe, a known place for moisture to enter. The car, covered with plastic and a tarp, had been sitting in an open shed on a dirt floor all this time. I was waiting to hear that "CLUNK" as the starter hit the flywheel, the sign of a rusted/locked up engine. The engine cranked for about a minute, on and off till the oil light went out-no firing of the plugs. I pulled the distributor cap and rotor and did a minor adjustment to the points. I pulled the distributor wire, both ends and reseated it. Primed the carb for the third time and hit the key--VROOM!!!. This purred like brand new--it has the big 455 with a 4 barrel carb. Shut it down after 5 minutes and went to inform the owner of the progress.
He couldn't believe it started either. I asked him who parked the car and what prep he did to it. He mentioned the application of MMO thru the carb and shut it down after that.
I use it to fog the engine in my 68 Barracuda as well as our 89 Baja. The thread on OSO about the usage of it and how it effects the upper block is very interesting. I'm just a back yard shade tree screw turner but find its uses helpfull all the time..Thank you all for your previous reply to it use.

PS: The buick is up for sale--located in central NH.