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Discussion Starter #1
Has anyone used zMAX and if so what are your comments on it??
 

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Ive used it for a few years in my tundra and it runs so smooth that when I'm stopped at a intersection i have to look at the tack to see if its running.
 

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Thought I'd bump this thread....as I'd like to know if anyone else has tried the Z-MAX product Mr. Shelby is putting his name on?

Any input is good input!

OSHELBYO

:bump:
 

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Few additives I've seen really work or do as they say. Fuel injector cleaners actually seem to do what they say as I do see a difference as do some transmission additives. I don't know how well zMax really works, but based on the following website, I personally would be skeptical about it.

http://www.ftc.gov/opa/2001/02/zmax1.shtm
 

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Discussion Starter #6
Interesting read.
 
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