That's not the 4.4 engine.
The leak from either the o-rings at the back of the cooler or from cooler gaskets only makes for an increasing mess although if enough oil gets onto the exhaust then there could be a fire risk.
Leaking o-rings precedes leaking gaskets but the o-rings can be changed quite easily and quickly providing only the o-rings are changed, noting that LR only supply the whole pipe which is not a quick job to replace. Don't let anyone change the pipe just because LR don't supply the o-rings, instead order 2 Viton o-rings yourself from a bearing supplier to be sure that normal o-rings aren't used.
				
			 
			
		 
			
				
			
				
			
			
				MY21.5 L405 D350 Vogue SE with 19s.  Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
VK2HFG and APRS W1 digi, RTK base station using LoRa
			
			
		 
	
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