Join Date: Sep 2005
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The only way to find out is to carry out a very tightly controlled mpg test over a couple of tank fulls of fuel and see if there is any difference in MPG.
It would be nearly impossible to check any change in performance
Currently in davesss's garage:
2002 Laguna Sports Tourer 1.8 Dynamique Moondust VF1KGOB, Fiat Siecento Micheal Schumaker, Kawasaki KLE M/Cycle and a cheap Mountain Bike.