How do you flush radiator for a 1991 mr2?

To flush the radiator of a 1991 MR2, first ensure the engine is cool and then remove the radiator cap. Place a container under the radiator and open the drain valve at the bottom to let old coolant flow out. After draining, close the valve and fill the radiator with a mixture of water and a radiator flush chemical, running the engine with the heater on for about 10-15 minutes. Finally, drain the flush solution, rinse with clean water, and refill with fresh coolant.