Quote:
Originally Posted by bipolardave
I can't help re: 300D fuel economy, but I wonder if perhaps tire pressure is more of a factor in winter than the diesel blend?
Given that you lose a few psi due to contraction in colder temps, I'm inclined to think this will play a pretty significant role in lowering winter mpg figures.
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Good point.
I bump up my tire pressures when the cold weather sets in. I see a lot of other cars running on tires with low pressure (sidewall collapsed in varying stages) driving around when it gets cold out.