I have a 1998 S500 with 62K miles. I just noticed that the oil pressure has dropped off some from normal. Usually the pressure is at #3 on the gauge and maybe #2 at idle. Now it is at #2 below 45mph and #1 at idle. I'm running 10w30 Mobil 1 (can't find 10w40 anymore except for extended mileage).

What number does your S500 read at normal driving and idle (hot)?

Tks

__________________
'98 S500 W140.051 119.980