10-13-2012, 12:33 PM
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Officially Welcomed to the 'Fest
Location: Champ
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Join Date: Nov 2009
Posts: 1,898
Mein Auto: 2010 550i M Sport
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Doru
Here is an answer on your question
"i haven't been on a highway in a long time"
If you drive M54 in city all time MPG will go down
Take a long trip on a HW 200+km with seafoam in tank
This will clean engine oil sludge so your MPG will be better
Keep tire pressure 37PSI HW 35PSI City
Another healthy staff for our engine is an autoRX
http://www.auto-rx.com/
give it a try, talking from experience , you will be happy with result
GL
Last edited by champaign777; 10-13-2012 at 12:42 PM.
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