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Old 11-06-2012, 06:53 AM
Penguin Penguin is offline
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Location: Illinois
Join Date: Aug 2003
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Mein Auto: Z4 and X5 Diesel
Originally Posted by watrob View Post
You should not be running winter diesel in your X5, its designed to run on Ultra diesel.
In the U.S. "Winter" diesel is "Ultra" diesel, as far as sulfur content goes. The switch over to Winter diesel formulations is completely transparent to the diesel buyer as it is labeled exactly the same and comes out of the same pump and the same hose -- it automatically is switched by the station operators depending upon the season, the location, and the time of year. So everyone uses Winter diesel in the colder parts of the U.S., whether they know it or not.

Last edited by Penguin; 11-06-2012 at 06:54 AM.
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