Quote:
Originally posted by pinapplex
Hi! I have a couple of questions about oil pressure. On my 1990 300 te the pressure when the engine is hot will be around 1 in N, and go slightly under 1 in D when standing still. It pops up to 3 at around 1500 rpm. This is all with AC off, turning it on will take away some more...
On a cold start it goes to 3, but it takes some seconds to go up when I start the engine.
Iīve always heard that itīs really bad to be under 1 no matter what, but my engine seems fit and good.
Is this normal and no need to worry?
Thanks! jm
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JM,
Check out what your owner's manual says. I don't have mine handy but I bet yours says the same as mine, namely that as long as the pressure at idle is at least 0.3 bar, and rises promptly on acceleration, no problem.
Mine has ALWAYS gone down to about 0.5 bar in summer, with AC on, in traffic. Changing to Mobil-1 15W-50 keeps it above 1 bar at idle. That's not why I use synthetic, but if this worries you, you might kill 2+ birds with one stone by switching over.