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I had a gain for a while...
of one to two miles per gallon, easily explained by other random changes. Or not, depending on what side you're on.
I wasn't impressed with it in the Sebring.
It's already in fuel anyway, in a smaller quantity.
Of course, I run 87 instead of the 91 that the manual says would be 'ideal for best fuel economy'. I want to try alcohol or E85 but I have never seen anywhere I could fill up on it.
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