You Don't Need to Know
I'm aware of all that is written above and I realize it is my responsibility to chase down the fuel provider. But there is also a factual error above. No gasoline introduced into a gasoline car will cause a $10K repair requirement. It's simply not possible. Secondly, BMW does not warn purchasers of this risk when they take your check at the dealer. No gasoline was put into the car but we're told it is in there somehow. And hence my situation. I guess i need to believe them. Is it known to all others at time of purchase that this is a real risk? I doubt it.
The diesel came from a Shell station and hence a name brand provider. We do have the receipts and will try to vector back to the point of purchase among several potential options. Incidentally, no engine warning light or any other sensor warning of any kind alerted us to this.
So BMW should disclose to you, when you buy the car, that if you put bad gas in your diesel engine, your repair bill may be $10,000? Is that your complaint?
What else should they warn you about? If your battery dies, it will be more expensive to replace than a Die Hard? If you get in an accident, OEM body parts will be expensive? If a rock cracks your windshield, a new one will be expensive?