Has anybody ever heard of this stuff? They have ads running on the radio in Vancouver claiming 25% increase in fuel mileage after 6 tanks. It seems too good to be true. Here is the link hopefully somebody with more knowledge of fuel additives can say whether it could be possible.

http://www.cavolution.com/default.asp

 

If it was really true then it would be mandated by the federal government that it be an additive to ALL fuels sold domestically.

It's just another "snake oil" propoganda ad.