I slapped in a new, overhauled 4.0 with fresh seals. I did the front & rear main seals, oil pan gasket, head gasket and valve cover gasket. The Jeep was leak free for about 900 miles until now. Now it leaks between the front of the flywheel and behind the oil pan. Theres no oil on the oil pan. I took off the lower flywheel shield and its coming directly from the U- shape where the crank sits. I made sure to apply RTV in the desired spots when installing the Oil Pan gasket and Rear Main. I checked the entire motor for leaks to make sure it wasn’t my oil filter, valve cover or head; it’s definitely either the oil pan or rms but I think its the rms. The leak is a slow drip but its significantly getting worse. I didnt however install the “Oil Pan Support Strap” because it was pretty worn. Would this affect the oil leak? Really not trying to remove the oil pain smh.

 

RMS?

 

That oil pan support strap has been on national backorder for months with a projected date of june {this was in march}.. It's possible you didn't get the seal around the oil pan gasket without it but don't be surprised if the RMS{rear main seal} is the problem...

 

This is for the 2000 model.