filling radiator with straight water(flush)

**Acceleration Junky** · 04-23-2008, 06:49 AM

If I drain and fill my radiator with water, then run the engine untill the thermostat opens and top off with more water, then drain, and repeat until it runs clear, how do I get ALL THE WATER OUT??? If I completely fill the coolant system with water and can only get some out through the radiator drain plug and by removing hoses (water pump, heater hose), how would I go about refilling the system with the right mixture of water and dexcool? If I cant get all the water out, then even if I fill it with a 50/50 mix, wouldnt the water that I couldnt drain dilute the 50/50 mix? I dont want to bring my car somewhere to get a flush not because Im cheap, because I like to do EVERYTHING to my car that I can. But, if this is something that I unfortunately have to absolutely farm out, then I would. Also, Im not interested in messing with the engine block drain plugs because they're a PITA to get to. Thanks for any info at all.

**extanker** · 04-23-2008, 06:55 AM

if you wont take the block drains out you could find the total amount it holds then measure what ya drain then put pure antifreeze to get the block water at 50/50 then fill with 50/50

**Acceleration Junky** · 04-23-2008, 07:00 AM

That was my only solution. I just wanted to make sure I wasnt missing anything. Thanks man.

**jad628** · 04-23-2008, 07:52 AM

Originally Posted by Acceleration Junky

That was my only solution. I just wanted to make sure I wasnt missing anything. Thanks man.

I don't think it's necessary to be that precise. Fill it and test it. If it shows the mixture is too weak, drain a bit and add some more Dex-Cool, although I doubt you will need to worry with it.
Mine hasn't had any issues, nor should it.