The best additives ever
From Vanessa Wise of Cincinnati, Ohio on 8/23/2020.

I have used these products ever since I got 50K miles on my car, which is a 2003 Hyundai Tiburon. I have had excellent results, especially with the smoothness with which the engine and transmission run.

Power system
From Joey of Glendale, Arizona on 6/22/2020.

already feeling a difference in the performance and running of my vehicle, from quicker response to smoother shifts. Thanks

HIGHLY 100% RECOMMEND this product
From John Miller of SHELL LAKE, Wisconsin on 6/12/2020.

This is a GREAT product I've been using this in my trucks & lawn equipment for 20years, and I'm very very HAPPY with it, I had a 1988 f150 that had 467 thousand miles on it and it ran like a new truck. Thanks a million Z-MAX, for a awesome product, I will and have recommended this to family and friends. As long as I can afford it I'll keep using it,

auto additives
From John Olson of Waukesha, Wisconsin on 5/22/2020.

I have been using these products for several years now. Work well.

Thank you,

Excellent Products
From JB of Austin, Texas on 5/21/2020.

I'd heard about ZMax and chose to use other products (for various reasons). But after using the Engine, Fuel, and Transmission treatments in my old 2003 4Runner V8, it runs like new - literally feels smoother than I've ever felt it drive and even better than newer models I've test-driven. I'm very impressed at the effectiveness of these fluids. I'll definitely be using ZMax regularly from now on.