Hi all,
I have not personally tried this product yet, but I do have a bottle being shipped to me. It is being used by the US Military, and has been featured by NBC.
It is free to join and you can get a starter kit for about $50 to see for yourself.
Gas savings is from 7 to 19 %...so you will save money in 3 tanks.
Click on my link
Heden
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http://www.4-ecorp.com/index.php?sp=dkrhome