The way I see it, if an OEM is not using it or suggest you buy it, likely it doesn't work or is detrimental to engine life, performance, etc. OEMs are struggling to meet CAFE regulations even to the point of selling high mileage vehicles at a loss. So, if there was some magic cureall for gas mileage, I'm sure they would give it a try and use it if it worked.
If it really worked as advertised, one of the gasoline companies would buy the patent and use it in their products and advertise the hell out of their amazing gasoline that outperforms all other brands. SOMEBODY would be making millions off this stuff and giving it more than a cheesy website.
May as well save some $$$ and just go to the local hardware store for some acetone. It's been used with mixed results to get better mpg. The bad thing is that it's paint stripper, so don't spill it on your car and it's not good for the rubber fuel line and stuff. Lots of info on the web about it. If you feel like experimenting, you could try the other environmentally friendly ester paint thinners/strippers, which is probably exactly what this product is.
Anyhow, these types of things most likely are one form or another of alcohol. Need to run richer to burn at the proper ratio (like E85). Hurt MPG, or just causes you to run lean. For such a small amont it likely does nothing. Best bet for MPG is to just jet lean as possible, and enlarge PV passages if needed. Drive sensibly, overdrive helps.
Or do like me. Work a mile from home, and ride a motorcycle in the summer. Most of the gas I purchase is for pleasure use, not necessity. Beats past jos, driving 70-80 miles each way every day.
The 1st kind of sex is called: Smurf Sex. * This kind of sex happens when you first meet someone and you both have sex until you are Blue in the face.
The 2nd kind of sex is called: Kitchen Sex. * This is when you have been with your partner for a short time and you are so needy you will have...