Uuummmm, I doubt it but... Don't guess, find out.
Next time it may not get you home.
Patrol Autos are reknowned for how tough they are so I would be sorting it out before anything terminal happened
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Id say with it being so dark in your photos , it may also be a combination of trans and engine oil...if you take the tranny out then also have a bo-peep at the rear main seal if you can