Leaking oil cooler gaskets if left unfixed would normally result in a slight burning smell that would slowly worsen over many weeks or months as small amounts of oil dripped onto the exhaust pipe that runs across the back of the engine. It would not go unnoticed.
With the oil light coming on then the fire I suspect that escaped oil has sprayed onto the exhaust, which could happen from an improperly fitted oil filter cap if an oil and filter change had just been done. I always climb up onto my engine with a torch to check for leaks after an oil filter change, as I did yesterday.
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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