Z-MAX

Yup. I tried it. That Zmax fuel additive on TV? 10.78 MPG before. 10.82 after.

I don't think it works on newer vehicles. Maybe it would work better on an engine with a lot of build up on the valves. For my money, it wasn't worth it.

[96ram]

I agree maybe on a older vehicle it may have better results but I tend to stay away from using miracle products that are advertised on TV.