As you know, there is a likely contradiction between "I'm sure the pump is fine" and "the pump did not have oil." This makes me question the prior work significantly. I hope it is just the timing, but right now, I personally doubt it.

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1968 220D, w115, /8, OM615, Automatic transmission.
My 1987 300TD wagon was sold and my 2003 W210 E320 wagon was totaled (sheds tear).