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Jeep Wrangler Problems

Dusty Conditions May Cause the Rear Main Oil Seal to Leak on Jeep Wrangler

Problem Description and Possible Solution

Some models are susceptible to rear main oil seal failures in dirty or dusty conditions. As dirt and dust collect on the oil seal, the abrasion wears through the sealing surface. A spacer is used between the bell housing and engine that has a small slot in the 12 o'clock position. Filling this slot with RTV silicone and cleaning the seal area can help prevent damage to the seal.

(29 people reported this problem)

Jeep Wrangler Vehicles With This Problem

RepairPal Verified
Average mileage: 39,908 (1,600–71,236)
Engines affected: 2.4L 4 Cylinder, 4.0L 6 Cylinder, 4.2L 6 Cylinder
18 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2013, 2016
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Viewing 1-9 of 9 comments
I coulso could not choose 2014 model which is what I own an unlimited 4 door Jeep Wrangler . I have oil coming out of my rear main seal it is leaking. I also have a friend who owns a 2014 with less than 2000 miles with the same problem. His son has 1600 miles on his 4 - door Rubicon he also has a rear main oil leak. can anybody explain this to me.
REAR MAIN SEAL STARTING LEAKING REALLY BAD. THE REPAIRMAN SAID THE CRANKSHAFT COULD BE CAUSING THE PROBLEM. I HAD THE REAR SEAL REPLACED. NOW AFTER 2 OR 3 MONTHS IT'S LEAKING AGAIN. I'VE ALWAYS MAINTAINED THE VEHICLE. OIL CHANGES ON A REGULAR BASIS. I HAVE ALWAYS USED I THINK 10/50 OIL BUT THE REPAIRMAIN PUT 10/30 IN IT. I THOUGHT IF I HAD AN OIL CHANGE AND PUT THE 10/50 BACK IN IT THAT THE LEAK MAY STOP.
Just noticed it tonight. Took a drive up a dirt road, about 4 miles, parked and just started to look the Jeep over when I noticed a very small amount of oil around the rear main. When looking into it a little more i noticed it has been leaking for at least a 100 miles due to the oil on the bottom of engin and trasmission. I will have to say I'm a little disappointed considering it only has 1650 miles on it. That's what the warranty is for. I will share results when I speak to dealer.
I had a rear main seal leak at 48,000 miles only to have the same problem again at 54000 miles. Told there is a tube that is for release of high oil pressure that often gets clogged and and then begins to drip oil very slowly after driving. Overnight there will develop a circular oil stain approximately the size of baseball, then stops after engine cools. Will have Wrangler repaired again and hoping it doesn't happen again. Repair shop says it's a common occurrence with the 4.0 L engine. I suppose Chrysler knows this problem well and won't make repairs.
I have a particular problem, apparently the rarest. I took my jeep in because the oil was leaking, well it turned out I needed a crankshaft seal replacement and cam seal replacements. Then I was told that it is some sort of oil pump, and now finally they say it is a special piece that Chrysler no longer makes and it will more than likely need a engine overhaul. I am not going to pay and I am currently looking for help finding answers to my predicament.