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Old 03-02-2012, 05:58 PM   #1
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leaks.....leaks....aarrrgghhhh

OK So I just got my cat replaced because it went bad and I was under checking the new one out and I saw this wetness that I havent seen before. I am unfamiliar with which seals the arrows are point to. The ones both the cat were wet, but the second one on the rear of the engine/front of transmission i guess? started a minimal drip.

Can anybody tell me what these two leaks/seals are? I'm at 77,600 miles and the cat went out. I replaced the oil after I bought it which was at 75,800 miles. I used full synthetic and have read that this can cause leaks because it cleans seals that have been gunked up and starts to leak(correct?). Just trying to be as proactive in my maintenance as much as possible.

This is an 04 Wrangler Rubicon.
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Old 03-02-2012, 06:34 PM   #2
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It could be the oil pan gasket seal or the rear main seal that is bad.

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Old 03-02-2012, 06:40 PM   #3
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It could be the oil pan gasket seal or the rear main seal that is bad.
Well there appears to be two different ones. So maybe both? The one that is the RMS is a very slow drip and the oil pan one is a slight wetness (no oil on the ground). Also my engine oil seems to be dirtier than normal for about 1800 miles. How much does replacing these seals usually cost?
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Old 03-02-2012, 06:51 PM   #4
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Probably less than $100 if you would of to do it yourself. I will need to do mine also once I get off my lazy butt.

Here is the link to help you with the rear main seal replacement.
[Repair] Rear Main Seal Replacement
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Old 03-02-2012, 07:28 PM   #5
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for the RMS, I was quoted on 350-450. Much cheaper if you do it yourself(50-100). I had a small leak at the bottom of my RMS and I could see that is was leaking right at the bottom of it. I didn't feel like dropping that much cash on it. I put some RTV sealant around the area and it isn't leaking anymore. It may just be a temporary fix, but it's working for now.
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Old 03-02-2012, 08:08 PM   #6
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for the RMS, I was quoted on 350-450. Much cheaper if you do it yourself(50-100). I had a small leak at the bottom of my RMS and I could see that is was leaking right at the bottom of it. I didn't feel like dropping that much cash on it. I put some RTV sealant around the area and it isn't leaking anymore. It may just be a temporary fix, but it's working for now.
What kind of RTV sealant did you use?
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Old 03-02-2012, 08:22 PM   #7
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What kind of RTV sealant did you use?
The area is going to have to be DRY..... clean it with starting fluid. Then try the "High Temp" sealer. I have my doubts that its going to seal though....

The correct way obviously is to remove the pan, gasket and rear main seal and install new. OR.....let it go for a while, it's not likely to pour 5 qts of oil on the ground in the next 1000 miles...or more. A lot of dealerships would claim that to be a "seep" and NOT covered if this was a warranty claim . Synthetic oil will create leaks and seeps.
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Old 03-02-2012, 09:14 PM   #8
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The area is going to have to be DRY..... clean it with starting fluid. Then try the "High Temp" sealer. I have my doubts that its going to seal though....

The correct way obviously is to remove the pan, gasket and rear main seal and install new. OR.....let it go for a while, it's not likely to pour 5 qts of oil on the ground in the next 1000 miles...or more. A lot of dealerships would claim that to be a "seep" and NOT covered if this was a warranty claim . Synthetic oil will create leaks and seeps.
Yeah ive heard that about synthetic. Im not too worried. I checked the oil level and it hasnt seemed to have dropped at all so no big deal. Im gonna clean the entire area tomorrow and dry it so I can figure out if its for sure the RMS or if its the oil pan gasket.
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Old 03-02-2012, 10:28 PM   #9
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Looks like a RMS. I had mine replaced for $400. But it still leaked. Waste of money. Its not a bad drip, but I know its there. I tried switching to a 10W-40 oil, but it still leaked. The Jeep runs better thou, so that's a plus.
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Old 03-02-2012, 11:14 PM   #10
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What kind of RTV sealant did you use?
I used the High Temp Black RTV. The tube I had leftover from changing my differential fluid. I drove the heck out of it today and still not leaking a drop. Who knows how long it will stay sealed, but hey my garage floor isn't get drops of oil everyday for now. Here is a pic of what it looks like now. I wiped the area off clean and then added the RTV. I figured it couldn't do any harm, as its pretty easy to remove the RTV.
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Old 03-02-2012, 11:19 PM   #11
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Looks like a RMS. I had mine replaced for $400. But it still leaked. Waste of money. Its not a bad drip, but I know its there. I tried switching to a 10W-40 oil, but it still leaked. The Jeep runs better thou, so that's a plus.
I have a slow leak as well. Brought it to my mechanic and he said it was the RMS. Said he'll replace it for 200 bucks. After reading what you posted im worried i might be wasting my money haha.
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Old 03-03-2012, 09:44 AM   #12
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Originally Posted by sawyert

I have a slow leak as well. Brought it to my mechanic and he said it was the RMS. Said he'll replace it for 200 bucks. After reading what you posted im worried i might be wasting my money haha.
Yea, it stinks. I would try a thicker oil. I wouldn't put any money into it from experience.
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Old 03-03-2012, 08:54 PM   #13
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Well i had it done anyways. Got it all done for $200. I'll be using High Mileage oil now instead of synthetic. Hopefully doesn't leak again.
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Old 03-04-2012, 03:58 PM   #14
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Yep, thats a RMS for sure. Gravity will pull it all the way around the oil pan.

DIY, like said above its $50. plus time. Use the link for RMS replacement above, take your time and youll be fine.

When done RIGHT, they will NOT leak. Use a good quality seal from napa and your going to have to replace the oil pan gasket as well. Use the one piece from napa and dont forget your anerobic sealant for the RMS.

The biggest pain withe the RMS is dropping the cats to pull out the oil pan. Since you just had your cats replaced the bolts are fresh, so at least you wont have to cut em.

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