If you have an Si6 volvo (Straight inline six) of the 3.2L or 3.0L T6 variety, and ever need to drain the coolant, this tool should help.

The drain petcock is in a very hard to reach place, and they can be pretty hard to open. This was a quick design put together in TinkerCAD and put up here in case anyone else needs one. Should work on any plastic petcock that is flat and 20mm across or less

Update: I've shortened the handle and added a second printable with the slot rotated 90 degrees. This should make it easier depending on the starting position of the petcock to open or close it. I cannot name how much time making this has saved me doing multiple flushes and fills

Note: I am not including profiles - because for an object like this, print it how you want, out of whatever you want. With as much or little infill as you want.  Defaults in Bambu Studio worked fine for their regular pla