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Old 12-20-2012, 05:32 PM
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Oil Leak on 2004 Grand Cherokee

I have a straight 8 Jeep Grand Cherokee 2004. Looks like it is coming from the crankshaft gasket/seal. Only a very slight leak. Oil on floor of garage in the morning but slight. Is it a expensive fix and could oil leak sealent cure it?
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Old 12-20-2012, 07:22 PM
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Re: Oil Leak on 2004 Grand Cherokee

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Originally Posted by geeoro View Post
I have a straight 8 Jeep Grand Cherokee 2004. Looks like it is coming from the crankshaft gasket/seal. Only a very slight leak. Oil on floor of garage in the morning but slight. Is it a expensive fix and could oil leak sealent cure it?
Or you have a straight 6, or a V8, never heard of a straight 8 in a jeep.
Is it leaking at the front end, or the rear end? Did you change from dino oil to synthetic oil by the way? Sometimes seals can start leaking when changing from one type to an other.
You first need to be sure where exactly its leaking from. Clean the area very well and check if you can trace it down to a seal leak, or maybe a pan gasket leak.
Not sure if oil leak stuff will not do more harm then good.
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Old 12-20-2012, 10:11 PM
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Re: Oil Leak on 2004 Grand Cherokee

If you have the 4.0L inline 6 motor, I'm guessing the oil is leaking from around where the transmission connects to the block. It's a fairly common issue for the rear main seal to leak.
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Old 12-21-2012, 06:49 PM
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Re: Oil Leak on 2004 Grand Cherokee

Sounds like a bad seal
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Old 12-31-2012, 07:56 PM
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Re: Oil Leak on 2004 Grand Cherokee

I would stay away from any type of oil additive. Quality oil has all the additives already and adding anything could cause more harm than help not to mention what else will they plug uu/restrict. Quality synthetic oils have properties to work with and help seal better making them flexible.
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