Its good for a lot of things. I have had friends use it for an assortment of reasons. (put it in the oil, put it in the gas, used as afterrun lub in model engines)
Years ago we had a fire in a cash register/accounting machine storage room, with the roof falling in on them when soaked by the firemen. After not doing anything to some machines, we hosed down the rest with MMO. Everything that was hosed down with MMO did NOT develope any corrosion even though they were left for months before disassembly.
I suspect that putting it in the gas tank is the equiv of the carb cleaners.
VX's don't need no stinking mod's.
But they're sure fun!