Low oil pressure
22 July 2008, 10:30 PM
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Low oil pressure
I've finally got round to fitting my oil temp and oil pressure gauges, and on firing up the Scoob to test them working, noticed that the oil pressure dropped to about 39 PSI once the engine had warmed up. I half crapped myself as I watched the gauge drop and drop, as I thought I'd forgot to fit the sensor properly and there could be oil dripping out (fortunately not).
39 PSI seems a bit too low!
The oil level is fine (only about two months since I had an oil change), so is this normal? What's a 'danger' minimum PSI I should watch out for?`
39 PSI seems a bit too low!
The oil level is fine (only about two months since I had an oil change), so is this normal? What's a 'danger' minimum PSI I should watch out for?`
22 July 2008, 10:46 PM
#2
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I've finally got round to fitting my oil temp and oil pressure gauges, and on firing up the Scoob to test them working, noticed that the oil pressure dropped to about 39 PSI once the engine had warmed up. I half crapped myself as I watched the gauge drop and drop, as I thought I'd forgot to fit the sensor properly and there could be oil dripping out (fortunately not).
39 PSI seems a bit too low!
The oil level is fine (only about two months since I had an oil change), so is this normal? What's a 'danger' minimum PSI I should watch out for?`
39 PSI seems a bit too low!
The oil level is fine (only about two months since I had an oil change), so is this normal? What's a 'danger' minimum PSI I should watch out for?`
22 July 2008, 11:10 PM
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I think from memory (only had my scoob couple of weeks and only driven it few times as yet) mine reads somewhere between 3 & 4 when idling then once driving normally it reads about 6.
Mines a 2004 STI should this make a difference?
Mines a 2004 STI should this make a difference?
22 July 2008, 11:22 PM
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Cold idle is usually around 6BAR
Hot Idle is usually around 2.2-3BAR
Hot normal driving/revs above 2.3krpm say = around 6BAR
Thinner oils will have lower hot idle pressures, but all yours sound healthy to me
OE warning light comes on around 15psi I think
Gaz
Hot Idle is usually around 2.2-3BAR
Hot normal driving/revs above 2.3krpm say = around 6BAR
Thinner oils will have lower hot idle pressures, but all yours sound healthy to me
OE warning light comes on around 15psi I think
Gaz
23 July 2008, 08:20 AM
#6
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I've finally got round to fitting my oil temp and oil pressure gauges, and on firing up the Scoob to test them working, noticed that the oil pressure dropped to about 39 PSI once the engine had warmed up. I half crapped myself as I watched the gauge drop and drop, as I thought I'd forgot to fit the sensor properly and there could be oil dripping out (fortunately not).
39 PSI seems a bit too low!
The oil level is fine (only about two months since I had an oil change), so is this normal? What's a 'danger' minimum PSI I should watch out for?`
39 PSI seems a bit too low!
The oil level is fine (only about two months since I had an oil change), so is this normal? What's a 'danger' minimum PSI I should watch out for?`
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23 July 2008, 09:36 AM
#8
I've finally got round to fitting my oil temp and oil pressure gauges, and on firing up the Scoob to test them working, noticed that the oil pressure dropped to about 39 PSI once the engine had warmed up. I half crapped myself as I watched the gauge drop and drop, as I thought I'd forgot to fit the sensor properly and there could be oil dripping out (fortunately not).
39 PSI seems a bit too low!
The oil level is fine (only about two months since I had an oil change), so is this normal? What's a 'danger' minimum PSI I should watch out for?`
39 PSI seems a bit too low!
The oil level is fine (only about two months since I had an oil change), so is this normal? What's a 'danger' minimum PSI I should watch out for?`
The oil pressure is dependant on a number of things - Oil viscosity, temperature, engine rpm and of course, engine (and oil pump) condition. If 39psi is the hot idle (750rpm) pressure, then it's fine! You should be seeing 80psi + at 3,000rpm.
JohnD
23 July 2008, 10:12 AM
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23 July 2008, 01:25 PM
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Nice one - thanks for all your input guys.
I guess it was just a case of my initial panic to see the gauge dropping so quickly as the engine warmed as the car idled, so probably more of a case of high blood pressure rather than low oil pressure...
I guess it was just a case of my initial panic to see the gauge dropping so quickly as the engine warmed as the car idled, so probably more of a case of high blood pressure rather than low oil pressure...
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