Thank you both very much! I can't find where the 1.7 figure came from now, but I did find information supporting your numbers. It is a rebuilt unit going in, so I will verify the oil level. What is the school of thought regarding the dryer and pre-oiling it? It sounds as thought the little bit extra in the new compressor gets pumped to the drier? I know the tech who supervised the job on my BMW advised prefilling the dryer with a small amount, though it does not really make sense to me...

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'01 CLK430 (hers)
'99 528iT (turd)
'87 Porsche 928 (just for fun)