If you were responding to something I said (you weren't exactly clear), please try reading more on this forum, you'd see my results for zMAX. And as far as "substantiating my claim", I don't know any other way to do so in this type of format, other than what I've already done...simply truthfully report my personal results, on my vehicles, with me driving. It's not really rocket science. And I'm not telling anyone to go get some zMAX...it's expensive, and for the benefit it gives, I can't say if it's worth the cost. But, I can say that in my own personal experience, it's the only stuff that helps gas mileage in any measurable amount...and that includes MotorKote 100. So, if something works out there, please share the good news with me, because I want to try it. Heck, I've tried about all of the rest...it only seems fair.
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