We have a local Radio Station host that is really pushing this stuff. He also pushes it on his national show. Who is running it and do you get any benefit from it. The reason I ask is I heard a guy get on his show and tell him he was getting up to 25-30 mpg on his dodge cummins. Yeah ok. I haven't tried it myself, but I am curious if its real or just some snake oil someone has thought up.

BTW the makers are also local to me.

 

I have a friend that swears by it. I have been running it for a little while off and on. Its a pain to measure out of the bottle. I don't think I really had much of a change in fuel mpg.
Im going to try it in the Jetta TDI, I have been in the 39.8-42 mpg range never better or worse. I will see what the CA40 will do.