If your oil level light is not coming on then the sender readings are good, it just leaks. If the wiring insulation is good and the sender reads correctly, just get the o ring and it will stop leaking. Easy easy to replace. Two bolts and it comes out, replace o ring and reinstall. too easy. Do it when you change the oil.

__________________
Christopher Henkel
1990 190E 2.6 - Arctic white SOLD
1986 190E-16v - Blauswartze
1993 300CE - SOLD
2003 W208 CLK 320 Cabriolet - Magma Red