Cold engine oil pressure
#1
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I see as much as 80psi oil pressure on my engine when it is cold - using Motul's fully synthetic (double ester) 300v Power 5w40.
Gauge sensor is in stock location.
ISTR that the pressure relief valve should kick in at 60psi?? What pressures are others seeing? Pressure is normal once warmed up.
Gauge sensor is in stock location.
ISTR that the pressure relief valve should kick in at 60psi?? What pressures are others seeing? Pressure is normal once warmed up.
Last edited by slowmx5; 07-01-2010 at 03:47 PM.
#2
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Sounds like a sticky valve. One of my B6s shows close to 80-90 PSI when revved cold, the other reliably limits to 60. Haven't blown any oil filters yet, so I'm not seeing this as a huge problem.
The important question is: how's the pressure at idle?
edit: Wait a sec, don't you Brits read your oil pressure in bar? You're screwing with my prejudices here.
The important question is: how's the pressure at idle?
edit: Wait a sec, don't you Brits read your oil pressure in bar? You're screwing with my prejudices here.
![big grin](https://www.miataturbo.net/images/smilies/biggrin.gif)
#5
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Sounds like a sticky valve. One of my B6s shows close to 80-90 PSI when revved cold, the other reliably limits to 60. Haven't blown any oil filters yet, so I'm not seeing this as a huge problem.
The important question is: how's the pressure at idle?
edit: Wait a sec, don't you Brits read your oil pressure in bar? You're screwing with my prejudices here.![big grin](https://www.miataturbo.net/images/smilies/biggrin.gif)
The important question is: how's the pressure at idle?
edit: Wait a sec, don't you Brits read your oil pressure in bar? You're screwing with my prejudices here.
![big grin](https://www.miataturbo.net/images/smilies/biggrin.gif)
Cold start idle (1200rpm) I see 55 to 60psi, hot 27 to 29psi.
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