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quote:Originally posted by mhs4771
Agreed, never noticed much with a bed cover, but on one of the other forums there's a thread about the wind deflectors you mount on the TV, there one caracter that claims a 4 to 5 MPG increse, now I'd like to know what he's smoking, because for most of us that would be a 50% increase in mileage. The general consus was that they did little or nothing and in some cases actually hurt.
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I totally agree. I don't think people deliberately lie about fuel mileage, at least I hope they don't, but there are so many variables that unless you can test under very rigid conditions, people can't make valid claims of what increases fuel consumption and what doesn't. Needless to say that doesn't apply to the manufacturers of these wonder products!