Quote:
Originally Posted by cssnms
Curious, what brand diesel do you use? Do you use any additives?
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I used a mix of BP and Koch from a high volume station before the problems started. When they started I switched exclusively to Shell and the problems continued. I followed BMW's recommendations for no additives, but started using some last month based on reading the experiences here.
Diagnostically, I have a very controlled case. I've put in every drop of fuel this car has sipped since initial delivery. I've only ever been to 7 stations, and two of those for only 1 tank each. The brand/station mix completely changed after the issues started, and they persisted.