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Old 07-02-2003, 08:37 AM
400E 400E is offline
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Join Date: Jun 2001
Location: Omaha, NE
Posts: 962
What type and viscosity of oil are you using? How long since it's been changed?

Oil pressure will tend to drop as oil spends time in the engine.

I found using Mobil 1 15W-50 made a big difference in oil pressure in my M119, especially in summer. Used to show pressures around 0.5 bar at idle in gear, now more like 1.5 bar.
'93 400E
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