Has anyone ever used any of that Z-max stuff? If so does it work

 

please do a search.

http://www.ftc.gov/opa/2001/02/zmax1.htm

nuff said.

 

LOL, does any kind of treatment actually work?
Not that my engine or tranny needs anything. Just curious.

 

fuel injector cleaners and such do a decent enough job, but nothing spectacular - its more of a maintenance thing rather than a performance solution. as far as i know, there really isnt anything else similar to that that really does any good.