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55 Chevy · 02-14-2018, 06:14 PM

I use 2 bottles of Gunk Water Pump Lube. Goes in like milk. Comes out the same in the fall. Done it for years. No rust whatsoever? I still use a stock radiator.

02-14-2018, 06:14 PM	#18
55 Chevy Member Join Date: Feb 2008 Location: Calgary,Alberta area Posts: 229 Likes: 23 Liked 20 Times in 15 Posts	Re: Water in radiator rusty looking I use 2 bottles of Gunk Water Pump Lube. Goes in like milk. Comes out the same in the fall. Done it for years. No rust whatsoever? I still use a stock radiator.