I have a 1990 190E 2.6 and I recently removed the valve cover and cleaned it as well as the gasket. My gasket is probably the original and I ordered one so I could replace it as I have an oil leak (that was minor, but is now not so minor since my recent removal of it.) Anyways, my oil pressure was fine for a few days after, but today I noticed that the oil pressure is really low i.e., at 0 on idle in "Drive" and also at 0 at idle in "Neutral." It used to read between 1 and 2 bars at idle on "Neutral" and 0.X to 1 at idle in "Drive." Is this because of my excessive oil leak because of my badly deteriorated valve cover gasket? I read several other threads on here from members with similar cars as well as other model MBZ's and they mostly all had something to do with the oil sender unit, however no one had ever mentioned to have excessive leakage from their engine which causes me to believe that my circumstances are a little different.