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My Jeep's Become an Oil Guzzler
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05-08-2012, 10:48 PM
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#1
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Registered User
Join Date: Jun 2011
Location: Birmingham, AL
Posts: 7
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My Jeep's Become an Oil Guzzler
My Jeep has begun to swallow oil. I'd say about every 4 months it burns/leaks 6 quarts. However, I haven't noticed any leak spots anywhere. Is this normal for a 10 year old JGC? If not, any suggestions on how to slow its HUNGER!?!?
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05-08-2012, 11:37 PM
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#2
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Registered User
Join Date: Jul 2011
Location: Amherst, NY
Posts: 1,454
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Have you recently switched to synthetic?
Also, gauge it on mileage, its more comparable. I'd say mine does about 1 qt every 2000 miles, so I don't know where you stand that way.
__________________
99' WJ, 2.5" Rusty's, Bilstein 5100's, JKS TrackBar, Moog SuperTrailBoss
"With enough fabbing, time & $, it's certainly possible.
That being said, it's like boinkin' your sister...just because you can, doesn't mean you should." - Double E
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05-09-2012, 01:54 AM
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#3
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Web Wheeler
Join Date: Jul 2006
Location: Stouchsburg, PA
Posts: 3,629
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Hows your PCV?
If its stuck open it will increase oil consumption.
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05-09-2012, 06:04 AM
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#4
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Registered User
Join Date: Oct 2011
Location: Glasgow, Scotland
Posts: 872
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I notice you haven't specified what engine you have?
Start looking for the obvious, get underneath it and see if its running or dribbling along the chassis, get a good look around the engine with an inspection lamp, Get a bit of card and leave it under the car at night when its parked up. If you rev it, is it smokey and if so, is it bluey/white?
All things to help clear up your mystery....
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05-09-2012, 12:25 PM
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#5
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Registered User
Join Date: Feb 2011
Location: East Meadow, NY
Posts: 925
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A quart and a half a month is ALOT of oil to be losing..Im surprised theres no stains under the jeep,or on the block.Check around the starter area for wetness..
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05-09-2012, 02:58 PM
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#6
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Registered User
Join Date: Jun 2011
Location: Birmingham, AL
Posts: 7
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My engine is the 4.7 H.O.
I have recently switched to Quaker State Synthetic High Mileage. From what I'm seeing in these forums, a lot of you use Mobil 1. I might have to try that.
No blue smoke. No drips. Haven't seen wetness anywhere, but it's totally possible I'm missing it.
I know I need to replace my TPS. Maybe the high revving at startup and uneven idling is burning it up?
Even more likely, maybe I have a black hole inside my motor.
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05-09-2012, 04:50 PM
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#7
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Registered User
Join Date: Jul 2011
Location: Amherst, NY
Posts: 1,454
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Quote:
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Originally Posted by Desterhof
My engine is the 4.7 H.O.
I have recently switched to Quaker State Synthetic High Mileage. From what I'm seeing in these forums, a lot of you use Mobil 1. I might have to try that.
No blue smoke. No drips. Haven't seen wetness anywhere, but it's totally possible I'm missing it.
I know I need to replace my TPS. Maybe the high revving at startup and uneven idling is burning it up?
Even more likely, maybe I have a black hole inside my motor.
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I wasn't actually going to suggest Mobil 1, as much I was going to suggest changing back to either conventional or a blend oil. I personally noticed that my WJ went through oil a ton faster when I ran synthetic than when I ran conventional.
__________________
99' WJ, 2.5" Rusty's, Bilstein 5100's, JKS TrackBar, Moog SuperTrailBoss
"With enough fabbing, time & $, it's certainly possible.
That being said, it's like boinkin' your sister...just because you can, doesn't mean you should." - Double E
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05-09-2012, 05:13 PM
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#8
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Web Wheeler
Join Date: Jul 2006
Location: Stouchsburg, PA
Posts: 3,629
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If the motor was/is sludged up switching to a better quality oil with more aggressive cleaning will thin the oil and cause consumption untill things get cleaned out.
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05-09-2012, 05:43 PM
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#9
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Member
Join Date: Mar 2012
Location: Shreveport, Louisiana
Posts: 116
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Check your valve cover gaskets mine was just leaking on to the exhaust manifold that's why I didn't see any leaks
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05-09-2012, 06:26 PM
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#10
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Senior Member
Join Date: Sep 2011
Location: Colonia, NJ
Posts: 661
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I agree with 86cj74.2L...it's possible the PO didn't maintain it well so there is a build-up of sludge. Putting in a decent quality oil with better cleaning agents will help clean out the sludge that may have been blocking potential leaks. Try running the new oil for 5-10k miles and if it doesn't get better switch back to conventional oil.
Remember the 2002-2003 H.O. engines use 10w-30.
__________________
2004 WJ Overland 4.7 HO Inferno Red ~93k miles / Flowmaster 10 series / exhaust cutout / K&N FIPK Intake / Jet Performance chip stage 1 / Superchips Programmer / JL sub and Alpine amp / RIP 1/17/12
2004 WJ Overland 4.7 HO Graphite ~105k miles / Powerstick Muffler / Superchips Programmer / 6000k HIDs / Bilstein 4600 HD / Addco Rear Sway Bar
1998 ZJ Limited 5.9 Deep Slate ~100k miles / Doug Thorley headers / 1.7 Harland roller rockers / Magnaflow hi-flow cat / no muffler / K&N intake / Bilsteins / 242
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WJ Build (aka Maintenance) Thread
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05-11-2012, 01:33 PM
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#11
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Registered User
Join Date: Jun 2011
Location: Birmingham, AL
Posts: 7
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Interesting takes on all of it. I'll look around the valve cover gaskets when I get home. Thanks.
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05-11-2012, 02:36 PM
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#12
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Web Wheeler
Join Date: Jul 2006
Location: Stouchsburg, PA
Posts: 3,629
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As an example I bought a 78 Plymouth trailduster
Back in the late 80's. It had crapy oil pressure with 80,000 on the clock.
My brother and I pulled the motor, flipped it upside down and put new rod and mains and oil pump in it. Oil pan was sludged bad, couldn't see the head bolts from all the sludge in the head.
Put some high detergent citco oil in and drove it. At the end of 2 weeks the oil pressure light came on at idle and gauge showed 0psi. Figuring the oil pump failed we got another and went back to the hobby shop on base and proceeded to change it. When we drained the oil it came out like piss water. (ever see a cow taking a leak?) one of the old guys there helping made the smart comment about how we should change out oil more then once every 2 years.
Put fresh oil in and it was fine. Returned the oil pump.
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05-11-2012, 04:26 PM
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#13
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Registered User
Join Date: Apr 2011
Location: Grand Rapids, MI
Posts: 150
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check your coolant...what color is it? still nice and pink/red? if its turning brown, time to flush that, and look into HG replacement.
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