an easy one...

[syzygy66]

...unless you don't know the answer (like me).

I have a 1990 760 Turbo wagon. I just got this car 6 months ago and there was no manual.

I wanted to do an oil change however my socket wrenches are large enough for the oil pan drain plug. So I have to go to the store and buy one. What size do I need???

Thanks in advance!

Kris