I'm going to do the same job soon in conjunction with with a chain and tensioner. Interested in the following:
How many miles on your car? How was your oil consumption before and after this project? are you interested in selling your spring compressor, or is it a tool one should keep around the garage for future needs? Thanks for posting your results!

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Earl McLain
'02 C230 Kompressor
'89 560 SEL "Frau BlueCar" (retired April 2004)