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Old 11-13-2008, 09:45 PM   #8
swifttal
 
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Drives: '91 Z-28
Join Date: Sep 2008
Location: Phoenix, Az
Posts: 446
Higher octane burns slower = longer burn cycle = less strain on motor (the horsepower piece is arguable). It seemed more efficient and the car pulled harder. About 10 miles into the tank, I noticed a difference
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