I changed the oil with some cheap Mcparts brand stuff. I figured I needed to at least get new oil in there then go from there. I will probably do some sort of engine flush and fill with synthetic.

Can someone tell me where the oil pressure sender is?

__________________
08 R320 CDI current

Past
95 E420
87 300D Turbo 5spd
90 300TE
83 300SD
85 300TD
92 400E
85 190D