I just noticed the ads in the blue band on the right side of my screen (due to a prior post about 'doubling your gas mileage'). What is up with this crap being allowed on this site????!!!! In my opinion, these lying crooks have no place on this forum! "Put a pill in your tank." "Run on water." "Pour in this miracle juice and get 100 MPG!" And so on and so on; BLAH, BLAH, BLAH. I would hope that all of us here are smart enough not to buy any of this junk so maybe they will go away. The first site I looked at was selling their juice ('it's not an additive' they say but guess what-you add it to your fuel tank!!!) for OVER TWO HUNDRED DOLLARS PER GALLON!!!! Oh well, at least it makes for entertaining reading. Their web sites are so full of fake science and mumbo-jumbo that you can't help but laugh out loud! Try this site: Fuel saving gadgets - a professional engineer's view: Ethos FR before you or your family gets bamboozled.