Average Rating: (From 3 Reviews):
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Fuel Formula - Highly Recommend
From Eileen of Allentown, Pennsylvania on .
added the Z-max to my fuel and noted a BIG improvement in Performance and SPEED. Also added to my transmission and Oil and also noted improvement with nice smooth shifting. Will continue to use this Product. Told another woman who also has the same Make and Model car as myself, she's going to order it and use it. Do you make a Car wax product? GREAT PRODUCT!!!
Response from zMAX: Glad to hear. zMAX Speed Wax is a great spray-on mist wax. Thanks for being a zMAX customer!
Unbelievable product
From Anonymous of Columbia, South Carolina on .
Been using zMAX over 10 years now. Used in 4-cyclinder, 6-cyclinder, hemi's. Improves fuel mileage. Love this product.
Response from zMAX: Thanks for these great words and for being a long-time customer.
zMAX works!
From G. Schultz of Yale, Michigan on .
No B.S. This stuff does EXACTLY as advertised. My 2008 GMC Sierra with 4x4, 95,600+ miles: all whistles - gas mileage improved and at-idle rpm down. Runs smooth as silk. Thanks, zMAX!
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