Front Diff. Leaking...and engine using oil now. - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 6 (permalink) Old 10-09-2010, 08:33 PM Thread Starter
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Front Diff. Leaking...and engine using oil now.

Just got back from driving 4500 miles to WI. and back. Halfway to WI I popped the hood to check the oil and noticed oil was all over my engine! On top of that, it was 1 qt. low. On the way home, once in NM I felt the Jeep was downshifting harder than normal. Today I changed the engine oil and got to looking around underneath and what do ya know? There's oil stains all over the undercarriage of the Jeep! I traced part of it to the front diff. (hence the hard downshifting due to low fluid) the other part is obviously the engine leaking! I'd swear my Jeep was made either on a Monday or a Friday. it goes in again this week.

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post #2 of 6 (permalink) Old 10-09-2010, 08:54 PM
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Blame the pot smokers!
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post #3 of 6 (permalink) Old 10-09-2010, 09:07 PM
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Quote:
Originally Posted by MMOPAR85 View Post
Just got back from driving 4500 miles to WI. and back. Halfway to WI I popped the hood to check the oil and noticed oil was all over my engine! On top of that, it was 1 qt. low. On the way home, once in NM I felt the Jeep was downshifting harder than normal. Today I changed the engine oil and got to looking around underneath and what do ya know? There's oil stains all over the undercarriage of the Jeep! I traced part of it to the front diff. (hence the hard downshifting due to low fluid) the other part is obviously the engine leaking! I'd swear my Jeep was made either on a Monday or a Friday. it goes in again this week.
Please explain the correlation between hard downshifting and the front differential leaking. This does not compute! If the oil filler cap is not tight, oil can be blown out (been there, done that) which could explain the oil all over the engine and the undercarriage. You could have leaked out a quart this way. Just driving would cause the leaked oil to travel down the chassis.

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post #4 of 6 (permalink) Old 10-10-2010, 09:34 AM
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Yeah I also dont think the hard shifting has anything to do with the front diff being low on gear oil. Thats transmission related.

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post #5 of 6 (permalink) Old 10-10-2010, 10:26 PM
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If the low oil level did damage to the front ring/pinion and/or differential, its possible it created lash or binding in the drivetrain and that could cause hard shifts. Sorry, if low fluid in the axle is causing the problem, it likely means the low fluid caused damage.

Low on Tans fluid could cause hard shifts also, and often bringing it back up to normal level will return the shifts to normal.
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post #6 of 6 (permalink) Old 10-12-2010, 01:29 AM
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Check the transmission cooling lines running to the radiator. They are known to leak around the metal fitting that the rubber hose runs into.
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