My 1992 doesn't have plastic screws, it has metal screws, that actually have to be unscrewed with a good ol ratchet.
In fact I have to drop the thing out when I want to do an oil change. I was thinking I might just cut a nice round hole directly under the drain plug. that way I'll save myself some time when doing oil changes.
Its not a big deal to me if I have to take it off, just an inconvienience because it has to come off to get tot he drain plug.
'92 300CE - Sold
2004 C240 - C7 Wheels
2015 ML350 - P1, Pano, Ash poplar wood, Sport Dinamica interior, Running Boards Keyless go.