Just spent about 20 minutes on Shell and Chevron's websites, and read about their diesel fuels. Besides our great weather, California is the ONLY state that only allows Ultra Low Sulphur Diesel (ULSD) to be sold. All other states must say in writing if it is Low Sulphur (LSD) or Ultra Low beng pumped. Using LSD in our new BMWs can ruin the emission controls and damage the engine. Scary if you are on a road trip, and are unlucky to be in a state with only LSD, and not ULSD!

What do you guys do, who are outside CA? Is it hard to find Ultra Low Sulphur Diesel? Both Shell and Chevron said it is mandatory to use ULSD for any 2007+ diesel passenger vehicle.

Chevron's website does talk a lot more about their diesel being as clean and top notch as their gasolines, compared to Shell!