Bring it to a recycling center
by recycling it :)
The best way to dispose of a cartridge is to recycle it, if you are not able to get a refill for it. You will take it to any recycling facility to dispose of it.
The only way to drain all the coolant is to unhook the bottom radiator hose. The radiator does NOT have a drain vale.
The coolant enters the engine by way of the lower radiator hose and exits the engine by way of the upper radiator hose.
For an 8V71 engine, a high-quality, low-silicate antifreeze coolant is recommended, typically a 50/50 mix of ethylene glycol and water. To drain the old coolant, locate the radiator petcock or drain plug at the bottom of the radiator and open it to let the coolant flow out. Additionally, you can remove the engine block drain plugs to ensure all coolant is expelled. Always dispose of old coolant properly, as it is toxic to humans and animals.
Coolant always goes in the top of the radiator.
Easiest way to drain the radiator is to remove the lower coolant hose.
pour it over a fire
As coolant cycles through the engine, it absorbs heat from the engine, after which, it continues through the cooling system back to the radiator. As the coolant passes through the radiator, the heat is exchanged to the ambient air by way of airflow through the radiator fins (this is why it's important not to bend the radiator fins).
In a 2001 Chevy Tracker, the coolant flows through the radiator from the top to the bottom. The hot coolant from the engine enters the radiator at the top, where it dissipates heat as it moves down through the radiator tubes. Once cooled, it exits from the bottom of the radiator and returns to the engine to continue the cooling cycle.
Atoz radiator doesn't have a drain plug. The only way to drain the coolant by removing its bottom radiator hose
The coolant leaves the radiator by way of the lower radiator hose then enters the water pump in most automotive engines.