Thanks for this description and photos. All very helpful. The diff/transfer box oil was described as in need of fresh oil at 90K. Can anyone confirm the periodicity at which the oils should be changed in these 3 gearboxes? Mine were done September 2022, and I read somewhere that the oil should be replaced every 2 years. Can this be right?

I doubt mine was ever changed at 110,000miles. It was still in good condition when i changed it and i suppose it also depends how the car is used. I do plan to do it every couple of years however. Not too difficult to do. RR HSE TDV8 4.4 2012
Jaguar S type 3.6l
Jaguar XJ8
Jaguar X type 3l
Triumph TR6 1976 - Jeep CJ7 1976

Thanks, Martin. Our L322s are ageing and deserve some TLC. The bi-annual oil changes seems sensible husbandry and, as you say, not that difficult to accomplish.

Great writeup - about to do mine. When you say the drain plug on the rear diff needs a 3/8” socket, do you mean square or hex? Is it def 3/8” and not 8mm as they are different? Thanks, Tim

Hi Tim,
Yes they are different, the 3/8 I used was a ratchet extension.
Rewarding job, have fun  RR HSE TDV8 4.4 2012
Jaguar S type 3.6l
Jaguar XJ8
Jaguar X type 3l
Triumph TR6 1976 - Jeep CJ7 1976

Thanks Martin - I’m sure I will! I take it you mean a 1/2” to 3/8” converter?

Scratch that - I’ve just realised what you mean. Good plan! 👍

That would work perfectly  RR HSE TDV8 4.4 2012
Jaguar S type 3.6l
Jaguar XJ8
Jaguar X type 3l
Triumph TR6 1976 - Jeep CJ7 1976