I was thinking that too. A good old fashioned German tune-up. I just wanted to make sure I wouldn’t hurt anything by doing some hard/fast driving.

I purged my coupe when I got it a couple years ago and had mild but good results so this result wasn’t expected.

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1985 300CD, CA
172 Anthrazitgrau/Palomino 154

1985 300TD, CA
040 Schwarz/Palomino 154/3rd row seat

1985 300TD, CA
473 Champagner/Palomino 154/Cargo cover

Actually your Engine/Car could be running perfectly and there is no way to predict if some had fast driving would hurt anything.

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84 300D, 82 Volvo 244Gl Diesel