Glad to hear you did not get just BS. Cost to drain a tank varies but volkswagon dealer wanted 190 plus tax just to drain one of ours. This was quoted by the stations insurance company so I asked for the cheque.

They sent it. With the understanding that if there was any residual damage they would cover that as well. My belief is with that much gas percentage the forty miles to the dealer may have totaled or damaged the engine was a possibility.

Fifteen minute job plus the fuel cost to refill. Back that long ago that cost was much cheaper for the fuel portion.

I did not want the car driven any further and the dealer was 40 miles away. It was almost all pure gas as the tank was low when she refilled.

They did not offer to flatbed the car in our case. Flushing the filter with diesel was the approach I used as well. Filled the filter with diesel and re installed it. Loosened the injector feeds and bled the system with diesel after putting diesel back into the tank. She had already drove all the way home with the issue.

I was not a happy camper as I had told her to always fill the tank herself or if unable. Or to at least get out of the car and make sure they are putting diesel in. This was before self service was pretty much the norm.

Personally I will not drive a diesel anywhere if a large portion of gas is suspect or known. Sometimes you get away with it and sometimes not.

The daughter got an attendant to put diesel in and they put in gasoline. The percentage of whatever is in that fuel is a concern. I would make sure they will pay the bill the mercededs dealer presents for certain before taking the cars in. Something tells me it might be substantial.

Actually no dealer is really required unless there is other damage. There also can be trust issues with dealers. Sad world at times but it is what it is.

Also get a sample container of the dumped fuel. The corporate offices may demand one from the dealer as well. Call it insurance. Have the dealer label the container you get. You did smell the gas at the fill neck? Although the color is also a good indicator as mentioned.