Thread: Coolant Swap

Originally Posted by Fivefingerdeathpunch

I still say stick with green, but heres what you should do.

drain rad, by pulling lower rad hose off

then pull the front knock sensor, let the coolant drain out of the hole and put it back inand the rad hose back on.

fill with water till full, then run the car untill the themostat opens and add more water, then let it run a min or two longer and shut it off.

then pull the lower rad hose again and drain, then pull the knock sensor again.

do it one more time if need be to get the extra coolant out.

Now have everything hooked back up and fill the rad with coolant. then open the bleeder valve on top of the thermostat houseing. turn the car on and let it run till the themo opens and add more coolant untill full, then wait a little bit while it go's into the motor and starts to carry out the air. You will see bubbles out of the bleeder valve .

wait for the bubbles to stop and then it should be straight coolant coming out. Close the bleeder and put the rad cap back on and your done.

wait a few days and check the level and the mix to see if if is right, depending on where you live will determine if it needs to be stronger or not, for winters and such.

Thank you! How important is taking the sensor off? Won't that be flushed when the water is run through the system?

pulling the sensor will help to drain your block. Radiator holds about a gallon and the whole system is +12 qts., so you're only getting 1/3 of the coolant out by draining the radiator.