Gooday Xfguys. Your blue smoke is burning oil. This oil gets into your combustion chamber either from ring bypass or through valve stem oil seals. Or both. I would suggest that your motor is showing signs of it's age. Have you done a compression test? You might be looking at a new set of rings and/or a head job (pardon the pun). How many klm's has your vehicle done? These 4.0 litre injected motors have a reputation for needing head gasket replacement from 150,000 onwards. Good luck with it, cheers.
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