986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Best way for DIY'er to flush all old coolant out of system?

woodsman · 12-03-2014, 11:18 AM

In 101 Projects Wayne instructs to position the heater to HI and to turn the fan on and key to it's first click- this allows the heater core to empty . He also instructs to detach the heater lines(2). I am in the middle of changing a rad( and since I'm in there...) and had access to the lower rad hoses as well but have realized that the center rad must still be full...I think I'll blow this out as I'm worried about gelling with the new Porsche coolant.

12-03-2014, 11:18 AM	#2
woodsman Registered User Join Date: Feb 2013 Location: Land of naught Posts: 1,302	In 101 Projects Wayne instructs to position the heater to HI and to turn the fan on and key to it's first click- this allows the heater core to empty . He also instructs to detach the heater lines(2). I am in the middle of changing a rad( and since I'm in there...) and had access to the lower rad hoses as well but have realized that the center rad must still be full...I think I'll blow this out as I'm worried about gelling with the new Porsche coolant. __________________ Death is certain, life is not. Last edited by woodsman; 12-03-2014 at 11:28 AM.