I noticed My Oil Pressure went to 0 today after driving for a long time.

It only does that at Idle, and once you hit the gas, up it goes. And if I only drive the car for a short time or even as much as an hour it is fine never goes to 0 sticks around 1.5 or so at idle, it is time for an oil change on mine and I use 10W-30.

Should I stay with 30 or go to 40 it is cold here, so I think lighter in the winter will be better for starts.

What you guys think?

I don't want to start an oil debate either. Clean is best in my opinion.

Thanks everyone.

__________________
1993 400SEL (W140) 281K
1999 S500 (W140) 163K (Sold)
2002 S500 (W220) 72K
1999 S500 (W140) 88K
You cannot simultaneously prevent and prepare for war.
Albert Einstein (1879 - 1955)