I would be looking into that. It’s probably one of your coolant outlets. Take a good look at the top of the trans(look from top). Look at the ledge in front of the vac. Pump. Look at the SERP belt tensioner near the water pump pulley. That’s your trifecta of usual suspects.I smell coolant every single time I walk by the LR4 after my wife comes home from work.
If you overheat a 5.0 it’s a damn boat anchor.