Quote:
Originally Posted by 631twentyeighteye
With my old diesel i noticed a huge difference since they would put anti gelling chemicals in. usually about 5mpg(down from 25-20). With my bimmer, i notice zero different. 23-25mpg 80% highway always using the same mobil 93 octane.
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My wife drives a 2005 vw golf diesel (guess what car is sitting on the driveway
) - zero difference