Rule of thumb is 10lb per thousand rpms. Karl Wolz Sent from my electronic umbilicus On Dec 16, 2012, at 12:51 PM, Robert Clemmer <n51219@COMCAST.NET> wrote: > Ok, I've replaced the water pump and rear heater core in my young 91 2.1 > automatic tin top. While I was there, I did some "you might as wells". > Changed all the fuel lines and removed the plastic fire wall fitting. > Replaced the O-ring on the breather tower. The old one was so hard and > brittle it came out in pieces. And, finally installed an oil pressure > gauge. Next week, lube oil analysis. > > > > What I got was 70 lb. pressure at cold idle. It is fairly cold here so the > best I can do is 190 degree oil temperature. At that temperature I have 18 > lb. at idle and 45 lb. above 3000 rpm. Close to 50 lb. cruising at 4150 > rpm. > > > > What I don't know is this good, bad, or average? I've been running Mobil 1 > 15w-50 oil and this engine just turned 250K miles. > > > > BobC |
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