Seasonal snake oil … If this product actually kept refrigerant oil from clinging to the walls of the components in the AC system, the compressor would promptly seize up causing repairs in the $1000 + range. Most likely, it simply does nothing. When it gets hot the snake oil salesmen hawk magic AC system additives, when gas prices surge they hawk all manner of gadgets and substances claiming to improve mileage, reduce emissions and increase horsepower all at once. Of course, health issues are such an intrinsic part of our existence that they are responsible for the lion’s share of snake oil marketing. My personal trainer has heard it all regards ways to drop 100 pounds of fat and gain 50 pounds of muscle in no time and with minimal work. None of it works, but wishful thinking and gullibility are universal human traits. I know better re’ automotive products with extravagant and implausible claims, but I am sure I have been duped in other areas at various times in my life. It is pretty pathetic how often advertisements for a scam product are presented as news.