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ryanheacox · 10-14-2019, 07:36 AM

What I did that made a huge difference, 30CCPU basically said above. First I filled the cooling system with distilled water and added a tab of dishwasher detergent to degrease. Ran it for a couple days and drained, looked terrible. Then I added thermocure, following the directions on the bottle. Ran for about a week and drained, completely black. Had to flush many times with water to stop a foaming issue but now the top tank of the radiator looks like clean brass instead of a rusty mess.

10-14-2019, 07:36 AM	#13
ryanheacox Senior Member Join Date: Apr 2013 Location: Northwest CT Posts: 1,092	Re: BackFlushing Radiator and Engine What I did that made a huge difference, 30CCPU basically said above. First I filled the cooling system with distilled water and added a tab of dishwasher detergent to degrease. Ran it for a couple days and drained, looked terrible. Then I added thermocure, following the directions on the bottle. Ran for about a week and drained, completely black. Had to flush many times with water to stop a foaming issue but now the top tank of the radiator looks like clean brass instead of a rusty mess.