[steved0x]

I am doing a WP/Thermostat change soon and I do want to flush all the old coolant out of the car because I don't know what is in there, and I am replacing with OEM Porsche coolant. I was going to buy many gallons of distilled water, and then do one of two things:

1. Remove the drain plug at the bottom, and then run the engine while I continuously add distilled water, until it comes out the bottom clear. Then disconnect the big hoses and like it shows in the 101Projects site to remove the remaining distilled water before finishing the job and refilling with 50/50

2. Remove the hose that connects to the thermostat, and then run the engine while I quickly add distilled water to the system, to pump out the old coolant through that disconnected hose. Then shut down, and drain/disconnect the other big hoses/drain as described in 101Projects.

Are these overkill (or bad/dangerous)? If I drain using the drain plug and then disconnect the hoses as described in the 101Projects will that do it for me? Do I need to turn the heat on?

I *think* my old coolant is pink but I am not 100% certain. it might be green. I can check it tonight.

Steve

PS for refilling I have the airlift tool and a compressor. I used it once already when flusing my Tacoma (using method 1 above) and it worked great at refilling.