Originally Posted by pawoSD

I don't think I'd want a top sider unless it made it a lot easier (if the car had covers underneath etc...) but on the W123 and W126 its just way too easy to quick go under and loosen the drain plug.

Here's my idea to improve the drain plug:

Replace the drain plug bolt setup with a setup like a brake caliper bleeder screw. So you can attach a hose to the bolt (screw) and drain it right back into an empty jug with no mess, then just re-snug the bolt....and you're done. No total removal of the bolt. No more washers to deal with....etc. I think that'd be cool.