How do you change antifreeze on 2002 mini cooper?

Answer 1

"There is usually a small tap under the radiator but some times it is easier to remove the bottom hose to drain the system"

Not all MINI Coopers have radiator drain plugs to the only way to drain the radiator is to loosen the lower radiator hose (after removing the shroud underneath it).

However, this will only drain the radiator which holds just 50% of your coolant.

The other 50% is inside the engine block so you'll also want to remove the engine block drain plug too. The engine block drain plug on a 2002 MINI is located on the rear face of the cylinder block next to the starter motor.

This is important for when you refill the system as the aluminum block should not hold any more than a 50-50 mixture of water to antifreeze. Any heavier on the antifreeze and you will have problems later.

Pre-mix the water and antifreeze before adding it as opposed to throwing in one gallon of antifreeze and one gallon of water to be sure.

When refilling, turn on the ignition and switch the heater control to maximum hot. Also slacken off the bleed screw on top of the radiator hoses and refill until straight coolant (no bubbles) leaks out.