You still need to get under to change the oil filters on these vintage Benzes. No 'topsider' for oil filters. When I change oil in winter, I wait for a dry day. It's unlikely you'll strip the large drain plug threads, though I've seen where 'mechanics', without the proper tool, used channellocks or visegrip pliers to chew up the allen plugs.

Happy Motoring, Mark

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DrDKW