Well I got my XJL half winterised today. Car is up on jack stands and wheels off. Ran fuel system cleaner through on a 250mile trip from Ottawa to home ( 28.4mpg at average speed of 75.8 mph ) Filled with 94gas and stabilised fuel. Oil changed.
Program to come: go through cooling system including aluminum pipes for engine and Bosch pump for supercharger cooler, brakes service with brake fluid change, transmission fluid change with new pan/filter. I am also having the wheels straightened and refinished.

I removed the left wheel liner and disconnected two items the wiring harness and the power cable for the engine coolant heater, see pictures.

I also discovered that my car is a so called dual fuel engine---see pics. So far I only have used 93 or 94 gas.

Harness connector was a bit sticky. Power cord was easy-just slide up. This a northern car feature

Definitely a Jaguar thing.

More evidence Jaguar are serious about this

 

BTK44, I think you are getting the plastic coolant lines and the aluminum ones confused. The plastic lines suffer from heat cycles. The aluminum ones should outlast the car.

 

Dual-fuel is pretty rare, it's a shame that it's up north where E85 is almost non-existent.

 

Yes it's called Flex-Fuel and I don't understand why Jaguar offered this on the 5.0L NA but not on any of the 5.0L SC models?
With FI and DI Alcohol is tailor made for those two things!
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But my car has a 470bhp 5.0L SC engine.

 

Your right! You have the unicorn. They did make them for the SC XJ but not the XJR.
Thanks for correcting me. So Jaguar did have the setup for the SC 5.0L engine.

I would still be interested in converting my XJR to flex-fuel too.
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Bottom of pump

power supply with MB connector

This is where you disconnect the headlamp washers water supply before dropping the bumper cover.

I finished the installation of my new Bosch supercharger cooling pump following the instruction of those who went before. ( Bigg Will, clubairth1, etc.) Pictures above along with one showing the water hose connector for the headlamp washers, located just below and inboard of the rear end of the passenger headlamp.
Next I have to remove the radiator cooling fan so I can clean all the crap out of the radiators and then on to the water pump and other cooling system fun.