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      05-04-2006, 03:16 AM   #8
3aficionado
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Drives: 02 M3/RRover Super
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With the 20% rise in gas prices in the past month the local news is always doing a piece on gas mileage. Our local news did tests with a bunch of pills, liquids, filters, air intake inserts, etc and found none of them increased fuel efficiency*. Some scientists they talked to even went as far as saying some of these items may cause adverse effects on an engine if used repeatedly over long term.

* The best increase was less than 1 MPG with a +/- 1 MPG margin of error.