Use it!
From Carl Terry of Las Vegas, Nevada on 3/29/2019.

I use this product in my vehicles every oil change. My wife's car has 90,000 miles and my truck has 348,000 miles and still going strong. Runs great and no smoke.

Response from zMAX: Great to hear! 348k and still going.

Highly Recommend
From Greg Blanke of Sheboygan Falls, Wisconsin on 2/13/2019.

I love the look on people's faces, when we sell race car parts with no varnish on them. It freaks them out. Lol. Haven't blown a race motor in 10 years.

Awesome product
From Anonymous of Canton, Ohio on 12/23/2018.

Noticable improvements in every vehicle we own...

Use it in all my engines!
From Anonymous of Columbia, South Carolina on 1/21/2018.

I have used zMAX in every car/truck I have owned (including 3 motorcycles, 2 lawnmowers, 3 weedeaters and one chain saw. I have told over 200 people (stopped counting after 200). Recently, I put zMAX in my Dodge Ram 1500 and will continue to do so. I will continue letting people know about your great product

Response from zMAX: Glad to hear and thanks for being a zMAX customer!