Ding!!
Ding Ding!!!! Looks like it would explode the next time I got stuck in traffic!! The picture does not show anywhere near as much cracking under the surface.
30 mins later and I'm patting myself on the back..! Simple job, even for a novice like me!
1: Remove top pipe (squeeze pipe clamp with pliers and slide off).
2: Unclip mounting bracket paperclip thing (small flat head screwdriver and prise off)
3: Remove sensor underneth (simple pulling and twisting)
4: Get some mole grips on the bottom, large pipe clamp and squeeze it open enouth to get the pipe off. (leave molegrips in place ready for filtting the new bottle.!)
5: Quickly remove bottle and stick it in a clean bucket/bowl to catch the antifreeze mix.
6: Fit new bottle in reverse to above.
7: Fill bottle with original antifreeze mix from the bucket/bowl. Top up if needed.
8: Quickly rinse off any spilt antifreeze with water.
Job done.!
James.