I would buy the tool (I have one, I use it to chase out the old anti-seize).oil the heck out of it, and operate it with your fingers ONLY a little at a time once you have it started right. A mistake here is very, very expensive. Take your time!

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86 560SL
With homebrew first gear start!
85 380SL
Daily Driver Project

http://juliepalooza.8m.com/sl/mercedes.htm