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991.2 Oil Pressure

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Old 09-02-2018, 05:48 PM
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jimmymoO
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Default 991.2 Oil Pressure

Question on the normal oil pressure. I just finished my first oil change on the T @2022 miles. After the oil change on the way home, I noticed the oil pressure going just at 5-6k RPM would go as high as 60 PSI. Idle it's sitting at 17PSI. I don't' recall (prior to the oil change) the oil pressure would peak that high almost to the red line. Is this normal?

What's a normal oil pressure?
Old 09-03-2018, 02:59 PM
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PCA1983
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I'll have to check mine next time I drive it. My recollection - it's about same as yours at idle, and increases with rpm. It's over 30 psi where I cruise at 3000+. I'll check at 5000-6000 next time i drive it.
Oil pressure is also temperature dependent. I drive only in Sport or Sport+ and my oil runs around 198-208°F

Last edited by PCA1983; 09-03-2018 at 10:49 PM.
Old 09-03-2018, 07:11 PM
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911-TOUR
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Originally Posted by .moo.
Question on the normal oil pressure. I just finished my first oil change on the T @2022 miles. After the oil change on the way home, I noticed the oil pressure going just at 5-6k RPM would go as high as 60 PSI. Idle it's sitting at 17PSI. I don't' recall (prior to the oil change) the oil pressure would peak that high almost to the red line. Is this normal?

What's a normal oil pressure?
That's normal. Mine is identical. Good work!
Old 09-03-2018, 10:38 PM
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bkrantz
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Driving around today, oil pressure after warm up varied from low 30s at around 2000 rpm to over 50 psi at over 5000 rpm.
Old 09-03-2018, 10:47 PM
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LexVan
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Seems like the .2 has a slightly lower idle rpm oil pressure vs the .1. On the .1 at cold idle the oil pressure is 25. Hot it's 20.

At highway cruising it's 31. At high rpms it's well over 60. These seem similar to the .2.
Old 09-04-2018, 01:04 AM
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jimmymoO
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Thanks for the feedback all! Interesting, it seems at 5-6k RPM would get to 60PSI. I wonder what it would be at if it goes beyond 7k (almost redline) RPM if that'll get to the redline on Oil Pressure.
Old 09-04-2018, 10:05 AM
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LexVan
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Originally Posted by .moo.
I wonder what it would be at if it goes beyond 7k (almost redline) RPM if that'll get to the redline on Oil Pressure.
You will easily see 5 bar, which is over 70 psi.
Old 09-04-2018, 10:11 PM
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VektorPerformance
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Keep in mind these engines have variable flow oil pumps. Your pressure will be determined by many factors: temp, load, RPM, and probably some other things that Porsche is monitoring to assure optimal pressure.
Old 09-05-2018, 08:52 AM
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PCA1983
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My S at idle cycles back and forth between 20 and 23 psi at idle, at 208°F in 92°F weather, as if there is some sort of cooling thermostat operating on and off. Fully warmed up at 208 °F it ran 59 psi at 5000.
Mine has the X51 PowerKit, and I'm not sure if any of the software is different for that.
These are much higher oil pressures than my 2015 991.1 C2S ran. Higher HP requires more cooling, and that requires higher oil flow. Apparently Porsche engine designers increased oil pressure to increase oil flow for more cooling.
Old 09-05-2018, 03:13 PM
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DBH
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I believe that Porsche calls for a minimum of at least 51psi at 5k rpm (on a warmed up engine).
Old 09-08-2018, 12:30 AM
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Luvwine
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I have noticed my oil temp stays at 234 degrees on a long drive. Is this high enough that I should be concerned? 2017 911 4S if it matters. Thx.
Old 11-07-2019, 10:59 PM
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vincenz0
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Is it normal for the oil pressure gauge in the multi-function display to get into the red zone on a 991.1S, say at a trackday?
Old 11-07-2019, 11:26 PM
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Bob Z.
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Originally Posted by Luvwine

I have noticed my oil temp stays at 234 degrees on a long drive. Is this high enough that I should be concerned? 2017 911 4S if it matters. Thx.
In normal mode that is correct, and in the 190s in Sport and Sport+.
Old 11-08-2019, 10:54 AM
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polobai
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Generally for most vehicles, I have always gone by at least 10psi per 1000 RPMs. Sounds about right for 60 psi at 5-6k rpms.
Old 09-30-2022, 03:14 PM
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JLetson
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Default Concerned about low oil pressure

My 2018 C4S when fully warmed up idles at around 14 psi oil pressure. I'm a bit of a newbie to Porsche, but to me that seems low. Can someone school me a bit?


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