I can't remember all of the stuff I found out about ZMax but I believe if I remember correctly it is a clorinated paraffin. I also think it was fined by the FTC but I can't remember for sure. You could check the FTC website.
Anytime somebody makes claims about some new 'miracle' oil supplement I wait and see what sort of things are discovered about the 'miracle' product. I certainly don't go out and buy it and put it in the engine of my car.
I have found that 99.99% of the time the new 'miracle' oil supplement eventually receives some very negative press and perhaps a fine from the FTC for false advertising.
But you can go to a store and find the same quality conventional and synthetic motor oil-Pennzoil, Valvoline, Chevron, Halvoline, Exxon/Mobil, whatever. Decade after decade people continue to pour the same Pennzoil, Valvoline, Chevron, etc. brands of oils into the engines of their cars, vans, trucks and SUVs. A lot of the 'miracle' oil supplements come and go.
The true miracle oil supplement that would stop wear forever and ever in an engine has never been invented.