Hi there,
Thank you for the donation,
I would first do a manual economy test, fill the tank and set the trip meter, drive about km and re fill check fuel used against distance covered, do this in city and open road conditions, you should be able to check your hard figures against the trip meter calculations, see who that works first.
Mark (mhpautos)
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Monday, March 8th, 2010 AT 1:37 AM