BMW Questions? Ask a BMW Repair Expert for Answers.
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Very often this can be caused by a faulty oil pressure sending unit, is it the engine oil or transmission fluid that is leaking? Have you determined exactly which fluid it is?
If its light brown and feels like engine oil, take a quick look at the oil filter be sure there's not some simple leak coming from there.
The transmission fluid may be read sometimes gets brownish when it starts to get dirty
Sometimes the new oil filter will not seal properly, and me a little extra attension.
With a leaking as bad as you describe I would not drive it anywhere. If you'd like slide under the car and take a photograph of where the leak is coming from and I can give you some ideas on how to fix it but driving the car make damage the engine beyond repair. If you don't think you can fix this yourself then have it towed to a qualified repair shop. But do not drive it