BMW Questions? Ask a BMW Repair Expert for Answers.
i cant say without seeing the vehicle but not changing the oil for 33000 miles will cause damage . the sludge most likely caused by the lack of oil changes and probably caused premature oil pump , crankshaft and connecting rod bearing failure . i wouldn't say that " ragging "on a car for 300 miles did the damage unless it was ran with very low oil or was overheated , although the oil pressure light may have been on during that 300 mile ragging