cj10jeeper wrote: ↑Wed Feb 23, 2022 1:32 pm
I used Motul Gear 300 LS 75w-90 Fully Synthetic Racing Limited Slip Differential Oil - 1 Litre from Opie Oils. Use code WELCOME15 and it works out at £22 inc. postage
The Motul Gear 300 LS 75w-90 Fully Synthetic Racing LSD Oil from Opie Oils is good stuff. I went for the recommended Castrol BOT720 which I picked up from the main dealer for just over £35.
cj10jeeper wrote: ↑Wed Feb 23, 2022 1:41 pm
Diff was slightly warmed with a short drive, but wasn't going to ever get hot in 5c temps. and by the time the exhaust cools down to access things it's all back to near normal temp...
Agree - def. changed the design from what's pictured on this thread. Access to the rear mounted plug is very hard and there's no possible access along the driveshaft as there's a solid bracket blocking it. Thin fingers, no gloves and and a creative bit/spanner set up is needed. Would be an easy and sensible factory change based upon real world feedback to drill the casing at a more convenient point.
I'd certainly advocate the 50k mileage point as the upper end to change it, especially if planning to track it or push to the limits...
Preferably, the diff oil should be warm but even if it's slightly warmed, that’s better than it being cold and will help with draining.
Jaguar may have changed the location of the diff oil filler plug for easier access? Not sure if your car has a slightly different set-up to the 2014 V6S in the link I provided earlier
viewtopic.php?f=27&t=4160 in which the OP, who has the same filler plug location as you said.....”To access and remove the plug I used a 5/16 hex drive, on a 3/8 long extension and ratchet. If you feed the long extension along the rear of the drive shaft, you can get on the fill plug and undo it.”
The Jaguar service schedule for the LSD oil change on my car is 64000 miles / 48 months. However, I’ve pencilled in 25000 miles / 48 months (whichever comes first). It’ll work out the same for now as I’m currently doing around 3000-4000 miles per year.
Something I also do in-between this service period to check the diff oil consistency/viscosity, is to slightly loosen the drain plug until the oil starts to show, then take a sample with my finger before retorquing the plug.....Gives me peace of mind.
However, they don't sell a lot of stuff that B&Q do at sometimes bargain prices from timber to paint, some plants to bagged compost. All the stuff I need for a new home
They told me the car is still fine to drive whilst they now wait to get hold of the new diff.
good result! 
