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Old 05-20-2010, 11:46 AM   #3 (permalink)
viio
EcoModding Apprentice
 
Join Date: Dec 2008
Location: Scotland
Posts: 102

Project EconoPolo - '04 Volkswagen Polo Twist TDi
90 day: 48.23 mpg (US)
Thanks: 14
Thanked 61 Times in 24 Posts
I've used a few different treatments, but I prefer Millers diesel power sport 4. Can't say it's ever affected my economy though, I just do it as a cleaning additive.
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