If all that is true I can't help but wonder why Shell or Texaco or Mobil wouldn't have a comparable product. Think what a tremendous advantage it would give them in the marketplace. All companies are always looking for an edge. It's all marketing and three card monty. Call me a doubting Thomas but I call it snake oil. If you look closely your see those 60 MPG carburators lurking back there on the same shelf. :rolleyes: