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Unread 05-13-2002, 08:53 AM   #1
Jaws
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Anybody Seen This - Tiny Drops of Oil on Rear Hatch

This is my first post. I just picked up my JGC this weekend.

After a 7 hour drive from Florida to Atlanta, my '99 V8 4x4 Limited had many tiny spots of oil all over the rear hatch. The underside of the truck is very clean with no indications of an oil leak.

Seperately, during an oil change, the technichian noticed some condensation on my oil filler cap. Could these be connected and should I be concerned.

Please help me on figuring out the problem. Thanks

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Unread 05-13-2002, 11:03 AM   #2
hamyscj
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Usually you get oil drops on your rear window when an oil leak is present under the vehicle. The air currents whip the fluid around and if the leaks are bad enough, it's on your rear window. If none are present, then maybe you just drove
over something. Condensation on the cap usually indicates moisture in the crankcase. Could be an internal coolant leak, a weak or blocked pcv system or you might not drive long enough at one time to get the motor hot enough to purge the normal water vapors. Basically, keep an eye on your coolant level. If it starts to drop quickly and there are no external leaks, get it checked. It would also be a good idea to check the pcv valve or breather system that that particular motor has. Keep an eye on the oil level and condition also. One last thought, you're not getting oil out of the tailpipe or anything, are you? Might be one more thing to check. Hamy.
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Unread 05-13-2002, 12:18 PM   #3
Jaws
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Hamy:

Thanks for your thoughtful reply. I just checked the inside of the tail pipe and it is bone dry, so I guess the oil is not coming from there. I'll take a closer look under the truck tonight, but the mechanic claims the underside is clean.

I'll keep an eye on the coolant level and oil appearance. Any other ideas would be greatly appreciated.

Thanks.
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Unread 05-15-2002, 01:27 PM   #4
turk
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Be sure that your rear differential plug is not leaking oil.
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Unread 05-15-2002, 03:23 PM   #5
Jaws
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Thanks for the input. As it turns out, I have a leak in the rear seal of my transfer case. Does this seem normal for 33k '99 WJ?

I'm new to jeeps, maybe anything is normal...

Jay
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Unread 05-15-2002, 05:15 PM   #6
fReAkY_dIvEr
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It wasn't quite a recall but they did replace my 98 ZJ's rear tranny case seal on factory recommendation at 55k - they said it was going bad on most of the 98's apparently. Maybe this will help you - or, maybe they just took my insurance company for a ride (-;
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Unread 05-18-2002, 06:20 PM   #7
nickw252
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I had a leak in my rear differential on my 95 Grand Cherokee and there was a small ammount of oil on my rear hatch. I never thought anything of it in the year and a half I owned it and nothing went wrong.
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Unread 05-18-2002, 09:20 PM   #8
Rodo
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Hi Jaw
My JGCL rear differential seal was wrong and leaking a little quantity of oil. The rear hatch door and window was oil sprayed. I replace the seal and all right again.
My JGCL is ZJ and have 31K miles.
Good luck!
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Unread 05-20-2002, 09:10 AM   #9
hamyscj
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Yeah, those seals are almost a normal wear item. It must have been leaking pretty bad to put oil on the rear window. Or else you drive too fast. Glad you figured it out. Hamy.
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Unread 05-20-2002, 07:54 PM   #10
Rodo
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Hi Hamy

No really I no go too fast , but I note that because the centrifugal force, the oil deposited in the cardan shaft, sprinkle all the truck floor. I suppose that part the oil no deposited in any site of the truck, fly afterward and by turbulence finally stop in the door and window. I Only guess. <img border="0" title="" alt="[Wink]" src="wink.gif" />
Best regards
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