A Question About Emissions Additives

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This is mostly for His Stigness, but maybe other Oppos know something about it as well. A long time ago Florida had emissions testing and my mom’s 2 year old Saturn somehow failed. The technician showed me that it was just a little bit out of range and told me to go to any auto parts store and buy an emissions additive.

I followed his advice and chose one that guaranteed I would pass. A week later it passed well within range. The stuff didn’t just work, it dramatically reduced my emissions. I just checked amazon and you can still buy it.


Florida doesn’t test anymore, but my question is: in states that do emissions testing, how would you know if someone was using it?

Bonus question: How does it work? Does it actually reduce emissions or just confuse the testing machines?

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