Marvelous Mystery Oil?

[Terry, NJ]

I use MMO to unstick an engine that hasn't run in a while. Makes them crank and start easier. Every so often, you'll hear that MMO is just ATF in a bright red can. MMO was around in the Twenties (at least I think it was) anyway it predates ATF.
I met a Case Backhoe owner and operator, who swears it cleans the injectors in his diesel. It seems to be good stuff!
Terry