I see. Are the 17'' alloy or are they steel? I think that heavier rims effect the fuel efficiency as its heavier at the wheels making it require more fuel when turning.
Good point Blasdf, never heard that one before though. Do you mix around the petrol around alot? I would assume its better to stick to the same fuel? or does it not make a difference? I used to use Mobil before switching to Bp ultimate, the first time i switched i "felt" that the engine was smoother and responded faster. Not sure if it actually made a difference or if i fell for the pseudo effect. Well im currently happy running on Ultimate, running around 400k mark per tank until the no bars left.
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