To relieve excess pressure in cooling system exceeding predetermined value.
Drain plug? Either at the bottom or rear of radiator
Of course
What you'll need to perform a radiator flush: Phillips head screwdriver or wrench (whichever your radiator drain requires) Cloth rag Radiator Flush solution Coolant Funnel Used coolant...
lwft hand bottom corner you'll see a plug. It's not eay to get to. If you can it's a half turn and pull out.. have fun