Oil Pressure? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

bluch · 09-19-2009, 08:40 PM

hey guys. i have a car question for you.

I got my car back from an oil change today. They put 6 liters of synthetic oil in. I notice that when I accelerate from idle that my oil pressure gauge jumps almost to 500 kpa (the highest reading on the gauge). Once I start going a constant speed (like 40 km/h - 80 km/h) it goes back down to around 250 kpa (the middle reading). If I accelerate again it goes up and then comes back down. If I am on the highway and going 100 km/h - 130 km/h the oil pressure gauge reads about 375 kpa (inbetween middle and top reading).

I had never noticed it doing this before, but I wasn't really looking either.

Is this normal? Shouldn't the oil pressure stay constant for the most part when driving? The oil pressure never drops below around 250 kpa. I don't know if this is from the recent oil change or what? Did they not put enough oil in? (I checked the dip stick and it looks fine) Just looking for some insight for you guys that are more "car know" than I.

Thanks.

Darsh 007 · 09-19-2009, 09:22 PM

I'll double check mine tomorrow and confirm for you. I was going "hmm" on my 3.5 hour drive from the dealer this week when I noticed a similar situation. Did a 'lil bit of research, and...

Basically, the pressure is a direct result of the combustion. Higher RPMs is forcing the oil through this system with greater force, so your pressure will go up.

I'm not a mechanical engineer, but it seems to be on par with expected behavior. Anyone else?

ShnOmac · 09-19-2009, 09:25 PM

Sorry bluch im no help on this one....

bluch · 09-19-2009, 09:27 PM

i understand that the oil pressure will go up as you work the car's engine works harder.

i'm just wondering if it is supposed to fluctuate that much and go that high?

ShnOmac · 09-19-2009, 09:30 PM

Hows the oil look on the dipstick when you pull it out? Does it seem like the correct weight?

bluch · 09-19-2009, 09:33 PM

the dipstick looks good. i checked it and it looks full and super clean...almost hard to see it is so clean

ShnOmac · 09-19-2009, 09:36 PM

I know with our G8 it fluctuates but it never pegs out.... we need someone to go check their car!

OUR72GTO · 09-19-2009, 09:43 PM

Read my post from July. Mine started at 400 miles. Goes in this week for new senser.

How much for the oil change?

bluch · 09-19-2009, 10:00 PM

Quote:

Originally Posted by OUR72GTO

Read my post from July. Mine started at 400 miles. Goes in this week for new senser.

How much for the oil change?

$110

lostinvt · 09-19-2009, 10:30 PM

FWIW mine is pretty similar. When the engine is cold, any time the car accelerates or I even touch the gas the oil pressure pegs. Even after it warms up, it's very common (at least in my car!) for the needle to bury itself under acceleration....

Not sure if it's expected or not, but seems common in my car....

OUR72GTO · 09-20-2009, 05:02 PM

$19.97 for the GTX @ Wal Mart and 8.95 for the cartridge at Lordco. Better than having some rookie lean all over my fenders. See if this changes any readings before GM monkies with it.

DEW · 09-20-2009, 06:08 PM

Absolutely normal, The oil pressure is a direct reflection of revolutions of the oil pump. RPM of the crankshaft increases, so does the oil pump resulting in higher oil pressure. Yuo should see some Harleys oil pressure at idle, almost 0.

zen · 09-20-2009, 06:14 PM

There probably is a "high Pressure relief valve" to prevnt excessive pressure. Also there are 3 dual jets that squirt oil against the bottom of the pistons to keep them cool, which may require higher pressures.

camarogolfguy · 09-21-2009, 02:32 AM

Quote:

Originally Posted by bluch

hey guys. i have a car question for you.

I got my car back from an oil change today. They put 6 liters of synthetic oil in. I notice that when I accelerate from idle that my oil pressure gauge jumps almost to 500 kpa (the highest reading on the gauge). Once I start going a constant speed (like 40 km/h - 80 km/h) it goes back down to around 250 kpa (the middle reading). If I accelerate again it goes up and then comes back down. If I am on the highway and going 100 km/h - 130 km/h the oil pressure gauge reads about 375 kpa (inbetween middle and top reading).

I had never noticed it doing this before, but I wasn't really looking either.

Is this normal? Shouldn't the oil pressure stay constant for the most part when driving? The oil pressure never drops below around 250 kpa. I don't know if this is from the recent oil change or what? Did they not put enough oil in? (I checked the dip stick and it looks fine) Just looking for some insight for you guys that are more "car know" than I.

Thanks.

Have you checked the oil level? I believe the LS3 takes 8 qts with filter change.

09-19-2009, 08:40 PM	#1
bluch OH CANADA! Drives: 2011 RAM 1500 LARAMIE Join Date: Mar 2009 Location: Edmonton, AB, CAN Posts: 3,930 View My Garage	Oil Pressure? hey guys. i have a car question for you. I got my car back from an oil change today. They put 6 liters of synthetic oil in. I notice that when I accelerate from idle that my oil pressure gauge jumps almost to 500 kpa (the highest reading on the gauge). Once I start going a constant speed (like 40 km/h - 80 km/h) it goes back down to around 250 kpa (the middle reading). If I accelerate again it goes up and then comes back down. If I am on the highway and going 100 km/h - 130 km/h the oil pressure gauge reads about 375 kpa (inbetween middle and top reading). I had never noticed it doing this before, but I wasn't really looking either. Is this normal? Shouldn't the oil pressure stay constant for the most part when driving? The oil pressure never drops below around 250 kpa. I don't know if this is from the recent oil change or what? Did they not put enough oil in? (I checked the dip stick and it looks fine) Just looking for some insight for you guys that are more "car know" than I. Thanks. __________________ Had to trade in the Camaro for a truck :(, but hopefully I can join the Camaro family again one day

09-19-2009, 09:22 PM	#2
Darsh 007 Drives: 2010 Camaro - 2LT Join Date: Jun 2009 Location: Alexandria, VA Posts: 96	I'll double check mine tomorrow and confirm for you. I was going "hmm" on my 3.5 hour drive from the dealer this week when I noticed a similar situation. Did a 'lil bit of research, and... Basically, the pressure is a direct result of the combustion. Higher RPMs is forcing the oil through this system with greater force, so your pressure will go up. I'm not a mechanical engineer, but it seems to be on par with expected behavior. Anyone else? __________________ 1100 = Preliminary Order: 5/8/2009 Cancelled by dealer (grr!): 7/2/2009 1100 = 7/16/2009 (awesome new dealer) 2000 = Accepted By GM: 7/25/2009 3000 = Accepted By Production Control: 7/29/2009 3800 = Produced: 8/31/2009 5000 = Delivered To Dealer: 9/14/2009 6000 = Woohoo!!!: 9/15/2009

09-19-2009, 09:27 PM	#4
bluch OH CANADA! Drives: 2011 RAM 1500 LARAMIE Join Date: Mar 2009 Location: Edmonton, AB, CAN Posts: 3,930 View My Garage	i understand that the oil pressure will go up as you work the car's engine works harder. i'm just wondering if it is supposed to fluctuate that much and go that high? __________________ Had to trade in the Camaro for a truck :(, but hopefully I can join the Camaro family again one day

09-19-2009, 09:33 PM	#6
bluch OH CANADA! Drives: 2011 RAM 1500 LARAMIE Join Date: Mar 2009 Location: Edmonton, AB, CAN Posts: 3,930 View My Garage	the dipstick looks good. i checked it and it looks full and super clean...almost hard to see it is so clean __________________ Had to trade in the Camaro for a truck :(, but hopefully I can join the Camaro family again one day

09-19-2009, 09:43 PM	#8
OUR72GTO 2010 SIM Beige RS 6M Drives: SIM RS 6M 66 Corvair Silverado LTZ Join Date: Oct 2008 Location: Kamloops,British Columbia Posts: 4,673	Read my post from July. Mine started at 400 miles. Goes in this week for new senser. How much for the oil change? __________________ CAMARO.. 2010 The Heart Beat is back in CHEVROLET Now let's put it back in America

09-19-2009, 09:25 PM	#3
ShnOmac Drives: 2006 Silverado SS, 2009 G8 GT Join Date: Aug 2008 Location: PNW Posts: 13,313	Sorry bluch im no help on this one....

09-19-2009, 09:30 PM	#5
ShnOmac Drives: 2006 Silverado SS, 2009 G8 GT Join Date: Aug 2008 Location: PNW Posts: 13,313	Hows the oil look on the dipstick when you pull it out? Does it seem like the correct weight?

09-19-2009, 09:36 PM	#7
ShnOmac Drives: 2006 Silverado SS, 2009 G8 GT Join Date: Aug 2008 Location: PNW Posts: 13,313	I know with our G8 it fluctuates but it never pegs out.... we need someone to go check their car!

09-19-2009, 10:30 PM	#10
lostinvt Serial #589! Drives: 2010 2RS/SS Join Date: Aug 2009 Location: Bergen County, NJ Posts: 85	FWIW mine is pretty similar. When the engine is cold, any time the car accelerates or I even touch the gas the oil pressure pegs. Even after it warms up, it's very common (at least in my car!) for the needle to bury itself under acceleration.... Not sure if it's expected or not, but seems common in my car....

09-20-2009, 05:02 PM	#11
OUR72GTO 2010 SIM Beige RS 6M Drives: SIM RS 6M 66 Corvair Silverado LTZ Join Date: Oct 2008 Location: Kamloops,British Columbia Posts: 4,673	$19.97 for the GTX @ Wal Mart and 8.95 for the cartridge at Lordco. Better than having some rookie lean all over my fenders. See if this changes any readings before GM monkies with it. __________________ CAMARO.. 2010 The Heart Beat is back in CHEVROLET Now let's put it back in America

09-20-2009, 06:08 PM	#12
DEW Drives: Hoopdee Join Date: May 2009 Location: Detroit Posts: 263	Absolutely normal, The oil pressure is a direct reflection of revolutions of the oil pump. RPM of the crankshaft increases, so does the oil pump resulting in higher oil pressure. Yuo should see some Harleys oil pressure at idle, almost 0. __________________ 2LT - CYBER GRAY METALLIC - BLACK RALLY STRIPES - MANUAL TRANNY - POLISHED 19" WHEELS BUILD - 6/12/2009 Airaid V2, Flowmaster AT

09-20-2009, 06:14 PM	#13
zen Drives: 2011 CTS CPE & 2010 2LT/RS CGM Join Date: Jun 2009 Location: Nevada Posts: 337	There probably is a "high Pressure relief valve" to prevnt excessive pressure. Also there are 3 dual jets that squirt oil against the bottom of the pistons to keep them cool, which may require higher pressures.

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