A leaky rear main seal is not uncommon on the older 4.0 Jeeps. My 1992 has been leaking for 3 years now 190,000 miles. I run 20/50 oil in it. Wal-Mart oil. I also have a 1988 with the same leak, 237,000 miles.
Like some one said check the crank case ventilation. Sometimes the vaccuum fitting on the intake will block. The main thing is to keep the oil level full.
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Today's Featured Article - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
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