How to remove air from the cooling system for pressure type radiator cap systems

After cooling system service, remove air from the cooling system.
Used 2L plastic used soda bottles.
Filled water up and upside down to top of radiator.
Start engine then warming up.
You see air coming out from the cooling system.
After thermostat is open that water level is down then start mix water and antifreeze.
Try little acceleration if air doesn’t come out from the cooling system it’s done.
Replace radiator cap same time check sub tank water level.
Make sure check water level open radiator cap ( not for sub tank) after system cool down.
This is pressure type radiator cap systems Not for pressure sub tank systems.

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