yep, sticking balls in the valvebody. The plastic balls wear over the years and get smaller leading them to stick. The car should be moveable while in "M" mode but dont drive it very far cause you could seriously mess the thing up! Get the valvebody from kurt and you will get your body deposit back when you send yours in. I hope you didnt fry it by driving it like that?
Yes you have to use the correct (expensive) fluid in there.
95 E34 530I V2.37
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Those who make peaceful revolution impossible will make violent revolution inevitable.
John F. Kennedy