block heater

Hi, Has anyone installed a suitable frost plug engine block heater for the B58 engine? I am concerned about reducing cold start engine wear. If you found one, what model did you use, what wattage is appropriate, how easy was it to install, etc. Something like this is what I had in mind:

I started this thread originally in the German forum but have now found that it should be in the core forum. The german postings below written so far can be translated with Google or deepl. ... I've been thinking about a parking heater for a while now. Actually I just wanted an interior air...