I did a flush not to long ago. All you need for a flush is just the fluid itself from autozone. I suggest changing the thermostat while your at it. If you live in a hot state like Texas or Az than I suggest asking for a lower temp thermostat than normal like 170*. First
: Remove the thermostat ( if you do buy a new one). Second
: Drian all of the fluid ( drain will be located on bottom left or right of radiator, its just a little plastic bolt). Third
: Cap the drains, replace your thermostat and fill the radiator with the suggested or correct amount of radiator flush. Fourth
: Fill the remainder of the radiator with water all the way up to the fill line. Fifth
: Start the engine and let it run for 10-20 min. Sixth
: Drain the water same way as coolant. Seventh
: Fill the radiator with just water to the fill line, than start the engine and let it run for 10 min. Repeat this step another 2 or 3 times to get all of the flush out. Eight
: Drain what is left of the water, than close the drain. Nine
: Fill your radiator with 50/50, coolant/water and your done!
I did that same process and my engine ran like a champ and was as cool as ever! Note
: If you do replace the thermostat, also be sure to buy a thermostat o-ring gasket. When you replace the thermostat, make sure you have that o-ring fitted correctly. Just keep a close eye during your flushes with the hood open for any leaks around the thermostat housing.
Good luck m8