Cooling system mystery

[Immortality]

Sometimes it helps to bring the revs up to help get the coolant moving a bit faster.

 

[Just Damo]

The correct way to bleed the stystem.
It can’t be done with just the cap off.
https://forums.justcommodores.com.au/threads/vz-ve-vf-alloytec-cooling-system-repairs.279976/

I have your thread printed out in my haynes bible for come time to do my coolant change. Also used the methods I could on the misso's 95 lancer and worked a treat.