Read my words - IF if does not clunk when turned over by hand do a compression check wet and dry. Metal shavings in the oil not a good sign. Engine could be very dead.

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Good - Fast - Cheap: Pick any two.
Current:
E23 735i; E30 318i; E32 735iL; E38 735iL; R50 Cooper; R55 Cooper Clubman.
Previous:
E21 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i