I have drained the block and replaced with g-05. I have NOT done the double flush. I feel thats a little overkill for an engine with only 60k miles on it. Nonetheless, I am up for trying almost anything. Last thing I want to happen on this is to ruin a relatively new motor. We will see first if this pump fixes the problem, if so, awesome, if not, onto the flush. Thanks for advice.

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1981 300CD 260k w 60k on new motor
1983 240D 4spd Manual