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2006 chevy 2500HD Duramax oil pressure.
08-06-2011, 09:58 AM
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#1
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Junior Member
Join Date: Aug 2011
Posts: 7
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I recently bought a 2006 chevy 2500HD with a Duramax 6.6 and failed to notice the low oil pressure at an idol. On first start the pressure is mid gauge but as the engine warms the pressure drops. The pressure comes up upon acceleration and runs mid gauge. Do I need to be concerned or is this normal? Where should the pressure be when idol?
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08-06-2011, 10:14 AM
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#2
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Moderator Emeritus
Texas Boomers Club
Join Date: Jul 2000
Location: Cypress, Texas USA
Posts: 6,626
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First, welcome to iRV2.  We're glad you've joined us.
The first question to ask is what oil, and what viscosity, are you using? That will have a huge effect on oil pressures.
Rusty
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08-06-2011, 10:32 AM
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#3
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Member
Join Date: Jun 2011
Posts: 60
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Got 85,000 mi. on mine, the oil pressure has always looked too low.
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2007 K-Z 35 Toyhauler, 2006 Chev 2500HD Duramax, 2005 H-D Road King Classic, 2007 Mini-Schnauzer "Scooter"
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08-06-2011, 06:17 PM
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#4
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 4,925
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At 104K miles, my Duramax has 40psi at hot idle, 65 at highway speed. The pressures were about 10 psi higher until the injectors failed and filled the crankcase with fuel. I use Shell Rotella 15W40.
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"As nightfall does not come at once, neither does oppression. In both instances there is a twilight where everything remains seemingly unchanged. And it is in such twilight that we all must be aware of change in the air - however slight - lest we bec
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08-07-2011, 07:31 AM
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#5
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Member
Texas Boomers Club
Join Date: Mar 2001
Location: College Station, Texas, U.S.A.
Posts: 49
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I wouldn't be concerned in the least, I have 227000 miles on mine it is exactly as you described. I run Rotella 30wt, have since it was new, I might go to a 40wt soon, it's almost broke in now.
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08-07-2011, 07:47 AM
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#6
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Member
Join Date: Jun 2011
Posts: 60
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If you're worried about the pressure, have the old oil analyzed at your next change and put your mind at ease.
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2007 K-Z 35 Toyhauler, 2006 Chev 2500HD Duramax, 2005 H-D Road King Classic, 2007 Mini-Schnauzer "Scooter"
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08-07-2011, 03:25 PM
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#7
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Junior Member
Join Date: Aug 2011
Posts: 7
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Quote:
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Originally Posted by RustyJC
First, welcome to iRV2. We're glad you've joined us.
The first question to ask is what oil, and what viscosity, are you using? That will have a huge effect on oil pressures.
Rusty |
I can't be sure since I just purchased it. I had planned to use what the manuel says. 15/40? Usually Rotella. Since they just changed the oil I hate to waste it by changing it again. I have been an auto mechanic for 18 years with limited diesel experience so I believe in what the factory recommends is the best for longevity. Any advice would be great!
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08-07-2011, 03:27 PM
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#8
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Junior Member
Join Date: Aug 2011
Posts: 7
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Quote:
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Originally Posted by Bulldog
I wouldn't be concerned in the least, I have 227000 miles on mine it is exactly as you described. I run Rotella 30wt, have since it was new, I might go to a 40wt soon, it's almost broke in now.
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Straight 30 or 15w 30?
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08-07-2011, 03:29 PM
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#9
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Junior Member
Join Date: Aug 2011
Posts: 7
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Quote:
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Originally Posted by menoble
If you're worried about the pressure, have the old oil analyzed at your next change and put your mind at ease.
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Great idea who should I use?
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08-08-2011, 07:13 PM
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#11
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Member
Texas Boomers Club
Join Date: Mar 2001
Location: College Station, Texas, U.S.A.
Posts: 49
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Quote:
Originally Posted by Michaelnstac
Straight 30 or 15w 30?
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I have been using 15w 30, and since my last post I changed it to 15w 40, very little if any change in oil pressure.
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'04 Designer by Jayco 31rls
2011 Ford F250 Crew Cab Lariat 4X4
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08-08-2011, 07:48 PM
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#12
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Senior Member
Join Date: Oct 2010
Location: Western New York (summer) someplace warm (winter)
Posts: 261
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Had an 05 Duramax, idled at approx 30 pounds when hot. Everything I read said that was about normal, my 2011 idles at 40 to 45 pounds when hot.
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2011 Chevy Silverado 4x4 3500 HD LT Extended Cab, DRW, Duramax/Allison, 2010 Montana 2955 RL with just about everything, MorRyde IS w/Disc Brakes, dual ACs, auto level, auto sat dish, combo washer/dryer. Michelle & Ann
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08-09-2011, 08:15 PM
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#13
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Member
Solo Rvers Club
Join Date: Sep 2009
Location: Kzoo, MI
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08-19-2011, 01:16 PM
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#14
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Senior Member
Appalachian Campers Coastal Campers
Join Date: Mar 2003
Location: New Bern,NC
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I had a 03 Duramax using Shell Rotella 15-40 W and it ran higher oil pressure than my 06 Duramax. The LBZ had a higher volume oil pump than the 03 has. Running down the road hot it a little over 40 psi and been like this since new. I would not worry about it. I saw the 03 go past 90 psi when cold and ran just under 60 psi when normal temp. I now got 77,000 on the 06 LBZ.
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2010 Carriage Cameo 35 SB3
2006 2500 Chevy Duramax CC 4X4
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