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| | | Forums66 Topics128,043 Posts1,055,605 Members48,426 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Jun 2002 Posts: 53 'Bolter | | 'Bolter Joined: Jun 2002 Posts: 53 | I am getting ready to move my '70 C10 out of the garage and into the driveway (wife wants to park inside). I checked the antifreeze and found that it is blue in color. Is this a different formulation from the standard yellow/green Prestone ethylene-glycol? Can I mix the blue with my Prestone?
53 Dumpy
1951 Chevy 3100 "Ernestine" 1970 Chevrolet C10 "Ol' Blue" 1940 JD "long-hood" B 1959 Jeep FC-170 1960 IH B275 2013 Chevy Silverado 2023 GMC Denali 2500HD
| | | | | Joined: Aug 2005 Posts: 1,186 Shop Shark | | Shop Shark Joined: Aug 2005 Posts: 1,186 | Sounds like windshield washer fluid?
Bruce | | | | | Joined: Nov 2006 Posts: 2,544 Shop Shark | | Shop Shark Joined: Nov 2006 Posts: 2,544 | I've seen some of the stuff that they sell thats ready to go out of the jug that has a blue/green tint to it. You might want to get a antifreeze tester and check to see how it tests? | | | | | Joined: Aug 2005 Posts: 1,186 Shop Shark | | Shop Shark Joined: Aug 2005 Posts: 1,186 | The 50/50 pre-mix the county uses is a light red almost like tranny fluid. The colors are getting kinda confusing!
Bruce | | | | | Joined: Mar 2008 Posts: 131 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2008 Posts: 131 | And Propylene-Glycol pre-mix is Purple. (Not sure why I added that) May be the bump I took on the pumpkin today (ice - slip - bang) 1952 Chevy 3804My 1952 in the Gallery The only thing necessary for the triumph of evil is for good men to do nothing." - Edmund Burke | | | | | Joined: Aug 2007 Posts: 1,859 Grumpy old guy playing with trucks, cars, and boats | | Grumpy old guy playing with trucks, cars, and boats Joined: Aug 2007 Posts: 1,859 | check the compatability. I know if you mix standard EG with PG you get a really neat brown sludge.
My recommendations are to always flush and fill when switching brands. Too many additives lately.
The problems we face today can not be addressed at the same level of intelligence we were at when we created them - Albert Einstein Or with the same level of $ - Me
| | | | | Joined: Apr 2008 Posts: 502 Shop Shark | | Shop Shark Joined: Apr 2008 Posts: 502 | Might sound strange but BMW(brand) coolant for car and BMW motorcycle is BLUE, looks like wiper fluid, smells like wiper fluid, but is coolant. When using a coolant tester it tests like regular coolant, wiper fluid does not- (I was worried when The BMW bike My wife rides(liquid cooled) had blue coolant in the tank.
Last edited by Yelostn78; 01/06/2009 1:15 AM.
| | | | | Joined: Jun 2002 Posts: 53 'Bolter | | 'Bolter Joined: Jun 2002 Posts: 53 | It tests with my coolant tester, so I assume it must be ethylene glycol. Hard to be believe that the 80 year old farmer that owned it before me used BMW coolantin it. Maybe his garage convinced him it was better than the good old green stuff. My goal was to lower the freeze point below the +10 degrees that it tests at now. Am I going to screw anything up if I drain the radiator and add Prestone to get the freezing point lowered?
53 Dumpy
1951 Chevy 3100 "Ernestine" 1970 Chevrolet C10 "Ol' Blue" 1940 JD "long-hood" B 1959 Jeep FC-170 1960 IH B275 2013 Chevy Silverado 2023 GMC Denali 2500HD
| | | | | Joined: Apr 2008 Posts: 502 Shop Shark | | Shop Shark Joined: Apr 2008 Posts: 502 | I agree that a random farmer would have BMW coolant- Perhaps there is another brand that is offering blue coolant? I have seen some water pump lubricants the same blue color, and some diesel engine cooling system additives that are also blue(stops cavitation) Maybe it is coolant from a tractor/implement manufacture? A quick google search shows that most european coolant is blue or red. which does not really help out here. I would tend to leave the coolant pure- possibly different chemical combinations effect the colors - I would probably flush and switch to prestone green, or something that is regularly available to you. Ford, I know not the most popular here has a diesel anti-cavitation additive(I have some in my garage for my 85 ford diesel, and it tints everything blue-green, if you use to much it is blue. Hope this helps anyways- | | |
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