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that is not necessarily true because i have found ones that actually do work but it's more of a combination then a single one. i did a few test runs with my own vehicle and others to make sure they did work did 4 cars without it on the first test runs and used the same 4 cars on the second test run with the additives and found i did actually save myself alot of gas. using a specific octane booster and fuel system cleaner together i made a trip from Tampa to Orlando and back on only a half tank of gas with a v8 vehicle and a 3/4 of a tank without it.

No, they do not work.

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โˆ™ 2015-07-16 18:57:07
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Q: Are products that claim to improve power and gas mileage for real and if so which is recommended?
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