Miata Mailing List: July 1998, Message #353

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Previously on Normal Oil Pressure, JEvans <JEvans@Angiosonics.com> said...
 
> What is the normal operating range for the oil pressure gauge in a 1.6L?
> Mine will stick at right above 30psi at idle and will stay above 60 and
> even hit past 90psi during spirited driving.  Is this normal?  I know
> low oil pressure is bad, but what is too high?

The real OPG will fluctuate as you have seen, and the readings change as the engine
warms up.  Initially it should sit around mid-scale even at idle, and hit the peg
around 4,000 RPM.  Keep the revs down so that the oil doesn't go to the peg until it
warms up and thins out.  After things are completely warmed up the idle pressure
will be around 30 and the high RPM pressure will be over 60.  Shouldn't max out even
under high RPM once warmed up though.

	-John

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John Freas (jfreas@earthlink.net)
Red '90 Base-ish #7690
Birmingham, AL
Team LS1, SP...
Team dlralt, PBC, Roebuck, Voodoo...
"I have no idea what those dimple things on the windshield frame are for."
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