Ask around, But I am almost sure the oil pan replacement or removal involved at a minimum, lifting the engine, if not nearly removing it. That is why no one is too interested in every changing the in the pan oil pump that can cause problems, you have to pull the engine. The lower body cross member is in the way to lower the pan down below the car. I hope you can find a different option. I have often seen something welded to the problem nut and then the new addition used to remove the problem fastener, look around to see if a shop can help with that first would be my recommendation

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Christopher Henkel
1990 190E 2.6 - Arctic white SOLD
1986 190E-16v - Blauswartze
1993 300CE - SOLD
2003 W208 CLK 320 Cabriolet - Magma Red