Any-one know anything about fuel additives?

Just got a flyer from the local distributor of of the US product "Fitch Fuel Catalyst", and I was wondering if any-one has any experience/knowledge of the stuff?


Its supose to increase fuel economy of a SBC by 11% or so, and also increases octane levels.

Any-one used it or know of it?

 

Sounds like the same claims made for Acetone. (see link)

http://peswiki.com/index.php/Directory:Acetone_as_a_Fuel_Additive

 

You actually believe this works!

Do you think a fuel filter will give you a 11% increase in fuel ecomony?