Proper runaway huh? To me a proper runnaway is one you can stop. It happened to me once when the IP shaft seal leaked fuel into the crankcase cauing the level to rise to the point of fuel/crankcase oil injection took place via the rings. I almost crashed but was able to stall the engine quickly before it destroyed itself. It was a scary experience when the car accelerates full throttle on its own and shutting the key off does nothing. Thank God it was a manual transmission.

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85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked