My Dex-Cool is ready to be replaced. I'm actually getting a buildup of some brown crap all over the inside of the coolant bottle. I head that its pretty easy to do a coolant flush yourself. So basically I can ramp up the front of the car, locate the plug on the bottom of the radiator, unhook it and let all the fluid drain into a pan or 2. Then I can take the plastic bottle out of my car and clean that out. Then I can just hook the bottle back up, put the plug back in and refill the coolant? Is that it or do I need to run something else through the system before I add new stuff in?

My friend, who is a mechanic at a dodge dealership said he would give me a coolant flush for 70$. Seems kinda high but he said he would back flush the coolant through the heater core. What do you guys think about backflushing coolant through the heater core?

Thanks.