Grimmspeed aos-Oil Pressure Increase

Evilsinner · 03-04-2013, 10:27 AM

I installed my Grimmspeed aos yesterday on my 2010 WRX. I noticed my oil pressure is much higher since the install. In the 1500-2500 rpm range I am reading in the 60-80 psi range now. Prior to the install I was in the 50-65 psi range. In the 2500-3500 rpm range I am reading in the 80-100 psi range now prior I was reading 60-80 psi range. Prosport Performance Series Oil Pressure Gauge, car warmed up. I am running full synthetic oil. I live in the Chicagoland area so it has been quite cold here. Is a jump in oil psi common after an aos install? Thank you in advance.

Mods

Cobb Stg 1/93
Grimmspeed aos
Invidia Q300 Catback

* Registered users of the site do not see these ads.

kellygnsd · 03-04-2013, 02:41 PM

Do you have an oil temp gauge also? Without knowing the oil temp or whether or not the oil was up to full temp makes a difference. Oil temp will lag quite a bit behind coolant temp too so even though you thought your oil might have been up to temp it may not have been.

An AOS shouldn't have any effect on oil pressure though.

adosdrummer · 03-04-2013, 03:15 PM

unless gobs of blow by..

kellygnsd · 03-04-2013, 04:15 PM

Quote:

Originally Posted by adosdrummer

unless gobs of blow by..

...and how would that effect oil pressure?

trev762 · 03-04-2013, 07:17 PM

Quote:

Originally Posted by kellygnsd

...and how would that effect oil pressure?

Well hate to tell ya but where the op lives he should have spent the extra money and got the Crawford v2 aos. It utilizes the coolant lines from the turbo to heat up the cylinder so his hoses don't freeze up from condensation. This might not be the case but just a thought!!

Uncle Scotty · 03-04-2013, 09:04 PM

Quote:

Originally Posted by Evilsinner

I installed my Grimmspeed aos yesterday on my 2010 WRX. I noticed my oil pressure is much higher since the install. In the 1500-2500 rpm range I am reading in the 60-80 psi range now. Prior to the install I was in the 50-65 psi range. In the 2500-3500 rpm range I am reading in the 80-100 psi range now prior I was reading 60-80 psi range. Prosport Performance Series Oil Pressure Gauge, car warmed up. I am running full synthetic oil. I live in the Chicagoland area so it has been quite cold here. Is a jump in oil psi common after an aos install? Thank you in advance.

Mods

Cobb Stg 1/93
Grimmspeed aos
Invidia Q300 Catback

exactly....and specifically which one

bet i know

CircuitRacer · 03-05-2013, 10:48 AM

Prosport gauges are not really known for their accuracy either. Could be another reason, your oil pressure sending unit may be giving you a false reading

Hivoltj · 03-05-2013, 01:03 PM

Placebo effect

Evilsinner · 03-05-2013, 01:28 PM

Probably placebo! there is a spike in the oil pressure according to the gauge. Do not have oil temp. Mobil 1 5w-30. Thanks again

Andrewxxcarlson · 03-05-2013, 02:33 PM

Quote:

Originally Posted by Evilsinner

Probably placebo! there is a spike in the oil pressure according to the gauge. Do not have oil temp. Mobil 1 5w-30. Thanks again

Sir prepare for possible flaming, due to your oil choice..

Evilsinner · 03-05-2013, 02:37 PM

In about 500 miles it will be time for another change. Ive used the Mobil 1 for the last two oil changes now. Im thinkin good time to go with another choice!

danger1138 · 03-05-2013, 03:56 PM

Dont use that oil.

Uncle Scotty · 03-05-2013, 09:16 PM

Quote:

Originally Posted by Uncle Scotty

exactly....and specifically which one
bet i know

Quote:

Originally Posted by Evilsinner

Probably placebo! there is a spike in the oil pressure according to the gauge. Do not have oil temp. Mobil 1 5w-30. Thanks again

yeppers......idiots and m1 5w30

and spun bearings

adosdrummer · 03-05-2013, 09:21 PM

Quote:

Originally Posted by kellygnsd

...and how would that effect oil pressure?

blow by is the pressure leaking past the rings into the crankcase.. builds pressure on top of the oil.

adosdrummer · 03-05-2013, 09:22 PM

Quote:

Originally Posted by Uncle Scotty

yeppers......idiots and m1 5w30

and spun bearings

I have built motors that spin to 9000+ rpms on M1.. but not on a Subaru block. Care to quickly elaborate for this Subaru newbie?

the suicidal eggroll · 03-05-2013, 09:32 PM

Quote:

Originally Posted by adosdrummer

I have built motors that spin to 9000+ rpms on M1.. but not on a Subaru block. Care to quickly elaborate for this Subaru newbie?

Nothing wrong with most M1 oils, but their 5w30 synthetic is an "energy conserving" oil. M1, and pretty much all other 5w30 "energy conserving" oils break down to a 20w in less than 1000 miles on our engines, at which point they don't have enough viscosity to adequately protect the bearings under heavy load. Not only that, but the amount of blow-by is ridiculous with M1 and other 5w30 EC oils, which backs up the PCV system, increases blow-by oil consumption, and could potentially cause problems like this.

adosdrummer · 03-05-2013, 09:37 PM

What has the nasioc community decided on as the most recommended oil for 2006+ turbo models?
I have yet to do an oil analysis on the car. I thinks its about time.

And thank you for your quick reply.

Elky · 03-05-2013, 09:39 PM

Most people, myself included, like Rotella T6.

kellygnsd · 03-05-2013, 09:41 PM

Quote:

Originally Posted by adosdrummer

blow by is the pressure leaking past the rings into the crankcase.. builds pressure on top of the oil.

I guess its possible if you have a broken PCV, a perfectly sealed crankcase, and world record blowby but a 20 psi increase at low load and low boost like the OP is seeing... Hell no

adosdrummer · 03-05-2013, 09:46 PM

My bad for quickly reading through the original post, did not compute that it was a 20 psi increase. Insomnia > reading comprehension

the suicidal eggroll · 03-05-2013, 09:59 PM

Quote:

Originally Posted by adosdrummer

What has the nasioc community decided on as the most recommended oil for 2006+ turbo models?
I have yet to do an oil analysis on the car. I thinks its about time.

And thank you for your quick reply.

Most non-EC 5w30 oils would be fine, but many people prefer to use 5w40. The M1 10w30 is actually a fine oil since it's not EC. The most popular oil on the boards is probably Rotella T6 5w40 though. It holds up well, it has lots of additives that other oils are phasing out for cost or environment reasons, and it's cheapish.

Uncle Scotty · 03-05-2013, 10:08 PM

Quote:

Originally Posted by the suicidal eggroll

Most non-EC 5w30 oils would be fine, but many people prefer to use 5w40. The M1 10w30 is actually a fine oil since it's not EC. The most popular oil on the boards is probably Rotella T6 5w40 though. It holds up well, it has lots of additives that other oils are phasing out for cost or environment reasons, and it's cheapish.

well.....kinda

there are so many m1 oils out there that you can easily get the WRONG one....and there are, really, only a couple GOOD M1 oils for use in hard driven turbo subarus

the high mileage ones and the extended performance should be used rather than their non hm or ep ones

the 5w40 turbo truck and suv or whatever they are calling it now is VERY good as is the 0w40
i mix a quart of either of those or a quart of the 10w40 Racing 4T with a gallon of the rotella t6 in my car and go 8k miles and change it out and forgetaboutit for another 8k miles

thecleaner691 · 03-06-2013, 12:50 AM

Scotty what is the advantage of mixing motorcycle oil with the rotella?

Andrewxxcarlson · 03-06-2013, 01:01 AM

Quote:

Originally Posted by thecleaner691

Scotty what is the advantage of mixing motorcycle oil with the rotella?

^^^^^

Uncle Scotty · 03-06-2013, 02:48 AM

that would take a long time to 'splain ya adequately....but it makes the oil more oily

lets just say that it makes bearing failure a very distant possibility even at 8k mile oci and the car driven VERY hard fully loaded in 100*F weather with the ac on....all else considered

and the m1 racing 4T is SM rated....so it isnt 'motorcycle' oil specifically

just like the T6 isnt diesel truck oil, specifically

03-04-2013, 10:27 AM	#1
Evilsinner Scooby Newbie Member#: 297013 Join Date: Oct 2011 Chapter/Region: MWSOC Location: Chicago Vehicle: 2010 WRX Hatch OBP	Grimmspeed aos-Oil Pressure Increase I installed my Grimmspeed aos yesterday on my 2010 WRX. I noticed my oil pressure is much higher since the install. In the 1500-2500 rpm range I am reading in the 60-80 psi range now. Prior to the install I was in the 50-65 psi range. In the 2500-3500 rpm range I am reading in the 80-100 psi range now prior I was reading 60-80 psi range. Prosport Performance Series Oil Pressure Gauge, car warmed up. I am running full synthetic oil. I live in the Chicagoland area so it has been quite cold here. Is a jump in oil psi common after an aos install? Thank you in advance. Mods Cobb Stg 1/93 Grimmspeed aos Invidia Q300 Catback * Registered users of the site do not see these ads. Last edited by Evilsinner; 03-04-2013 at 10:32 AM.

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03-04-2013, 02:41 PM	#2
kellygnsd Scooby Guru Member#: 32669 Join Date: Feb 2003 Chapter/Region: SCIC Location: Rancho C Vehicle: 2007 FR TS EFR 7670 LINK G4 hybrid STi	Do you have an oil temp gauge also? Without knowing the oil temp or whether or not the oil was up to full temp makes a difference. Oil temp will lag quite a bit behind coolant temp too so even though you thought your oil might have been up to temp it may not have been. An AOS shouldn't have any effect on oil pressure though.

03-04-2013, 03:15 PM	#3
adosdrummer Scooby Newbie Member#: 348773 Join Date: Mar 2013	unless gobs of blow by..

03-05-2013, 10:48 AM	#7
CircuitRacer Scooby Newbie Member#: 308527 Join Date: Jan 2012 Chapter/Region: South East Location: Central City, Ky Vehicle: 2004 WRX STI	Prosport gauges are not really known for their accuracy either. Could be another reason, your oil pressure sending unit may be giving you a false reading

03-05-2013, 01:03 PM	#8
Hivoltj Scooby Newbie Member#: 348242 Join Date: Feb 2013 Location: Billings, MT Vehicle: 2013 Impreza WRX Plasma Blue Pearl	Placebo effect

03-05-2013, 01:28 PM	#9
Evilsinner Scooby Newbie Member#: 297013 Join Date: Oct 2011 Chapter/Region: MWSOC Location: Chicago Vehicle: 2010 WRX Hatch OBP	Probably placebo! there is a spike in the oil pressure according to the gauge. Do not have oil temp. Mobil 1 5w-30. Thanks again

03-05-2013, 02:37 PM	#11
Evilsinner Scooby Newbie Member#: 297013 Join Date: Oct 2011 Chapter/Region: MWSOC Location: Chicago Vehicle: 2010 WRX Hatch OBP	In about 500 miles it will be time for another change. Ive used the Mobil 1 for the last two oil changes now. Im thinkin good time to go with another choice!

03-05-2013, 03:56 PM	#12
danger1138 Scooby Specialist Member#: 279525 Join Date: Apr 2011 Location: QUEENS NY Vehicle: 04 rex luger!	Dont use that oil.

03-05-2013, 09:37 PM	#17
adosdrummer Scooby Newbie Member#: 348773 Join Date: Mar 2013	What has the nasioc community decided on as the most recommended oil for 2006+ turbo models? I have yet to do an oil analysis on the car. I thinks its about time. And thank you for your quick reply.

03-05-2013, 09:39 PM	#18
Elky Scooby Newbie Member#: 303906 Join Date: Dec 2011 Chapter/Region: NESIC Location: Porter Square, Slumerville Vehicle: 2011 WRX Sedan Spark Silver Metalic	Most people, myself included, like Rotella T6.

03-05-2013, 09:46 PM	#20
adosdrummer Scooby Newbie Member#: 348773 Join Date: Mar 2013	My bad for quickly reading through the original post, did not compute that it was a 20 psi increase. Insomnia > reading comprehension

03-06-2013, 12:50 AM	#23
thecleaner691 Scooby Newbie Member#: 224641 Join Date: Sep 2009 Chapter/Region: SCIC Location: Southern California Vehicle: 2004 sti wrb	Scotty what is the advantage of mixing motorcycle oil with the rotella?

03-06-2013, 02:48 AM	#25
Uncle Scotty NASIOC Supporter Member#: 16200 Join Date: Mar 2002 Vehicle: OK Houston we have an Uncle	that would take a long time to 'splain ya adequately....but it makes the oil more oily lets just say that it makes bearing failure a very distant possibility even at 8k mile oci and the car driven VERY hard fully loaded in 100*F weather with the ac on....all else considered and the m1 racing 4T is SM rated....so it isnt 'motorcycle' oil specifically just like the T6 isnt diesel truck oil, specifically