i thought about this for a little bit, and here is whats fishy:
gasoline has very low surface tenion because it is nonpolar. It actually evaporates very easily. This is why if you throw a match at a puddle of gas it will ignite, whereas a puddle of oil will not. The article says that gas has a low surface tension, which is not true.
another thing: If it really did help your gas mileage, wouldnt EVERY gas station be putting it in and claiming that their gas will help your MPG by 10%? There is probably a good reason why gas companies tell you not to put it in the tank.
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