It definetly contains an amine cleaning agent of some sort, it smells very strongly of Amine, stronger smelling than Techron or Regane, but that could just mean a different more volatile compound, but some sort of amine is in there. I lpersonally like it. Just took a long highway trip to see some colors up in the Upper Penninsula, chucked it in, filled up and drove almost 400 miles before refilling. Mostly highway at 74-75 and two lane at 60. Got 31mpg in my 2002 Century, a good 2 mpg better than I had been averaging on the highway before. I am not saying it was the V-power, it could have been a lot of things, but I don't think it hurt either. If it is cheap or free what the heck.