E30 Zone

I had an oil pressure switch (to replace my leaking one) when I did my oil change today but transpired it was the wrong type, so the old one went back on.

How much oil will I lose when replacing the switch? (I will do it after it has sat for a day so most of the oil is in the sump).

Ta

J

A drop

Unless you attempt the swap with the engine running, you will have no loss of oil.

danke schön