Swapped MrBlaine's bolt in. Jeep is now 10x cooler.
The Marvel Mystery oil has caused a bit of lifter clatter. Doing my semi-annual oil change a bit early to get it out of the system.
Even more fun, my Jeep has started making a banging noise. When I down shift, I pull to neutral, rev the engine to match speed, clutch in, and then push into gear. This keeps the clutch and synchros a bit happier since everything is matched. Now seemingly randomly, when I hit the gas while in neutral to rev up, there is a large banging noise from the transmission area. No clue what it could be and it only happens about 5% of the time I down shift.
I checked the engine and transmission mounts, as well as the clutch fluid. Everything is looking good and the Jeep drives perfectly. I'm at a loss. Might have to just have my shop look at it since I'm not yanking a transmission out in my parking garage. I wish I was able to put some idea on what it could be, but I honestly have no clue since it is such a random problem.