A glycol. Most importantly, find out what caused the system to overheat and repair it to avoid major engine damage. Engine coolant is a mix of ethylene glycol and water. I’ve done everything except replace the head gasket, my next project I guess. Have a 05magnum 3.5v6. Stay in touch with new products, promotions, free stuff and more! Ultimately, ItStillRuns explains, it’s not about the color, but the coolant itself. Propylene Glycol, which is non-toxic, is sometimes used in the mixture, as well as, or even instead of, the more toxic Ethylene Glycol. Although both propylene glycol and ethylene glycol have a large number of applications across a variety of industries and uses including cosmetics and preservatives (propylene glycol) and within the manufacture of resins, inks and polyethylene terephthalate (ethylene glycol) both have a common use within antifreeze and coolant mixes. Is there a product that I can mix with hot water prior to filling the cooling system then put it in the radiator and let it soak without running the engine? Anything that says “safe for older automobiles” would also work. Be careful of “Extended-Life” additives, as these will eat away at older aluminum, and could cause more harm than good. Rust builds up in the system, inhibiting coolant flow, which causes overheating. News, Reviews, Photos, Videos delivered straight to your in-box. http://store.gobdp.com/radiator-flush-00204/, https://store.gobdp.com/radiator-flush-00204/. The former combines ethylene glycol with silicates, phosphates, and inorganic acids, Hemmings explains. Mopar would still be the recommended antifreeze for your Plymouth Horizon. It's OAT, Organic Acid technology. The factory recommendation is GM Dex-Cool for your vehicle. We get it. Thanks. I inherited an 85 Maserati bi-turbo from my brother. Ethylene glycol is primarily used in antifreeze formulations (50%) and as a raw material in the manufacture of polyesters such as polyethylene terephthalate (PET) (40%).. Coolant and heat-transfer agent. Address the probleFrim immediately! Thank you for asking about your Buick Riviera. To guard against major engine failure, read on. Thanks for subscribing. In the past I was an auto mechanic and I am very capable of working on this vehicle. Thank You for Your time……. Ethylene glycol has a bitter, sweet taste and causes inebriation. Check your in-box to get started. Coolant ( either ethylene glycol or propylene glycol) is diluted (usually 50/50 with distilled water) antifreeze. My first thought was the thermostat. It was also then that I learned that it had red antifreeze in it. The factory recommended antifreeze for your vehicle is the orange Dexcool. Hi, I have a 2015 Evoque 2.0 Si and which coolant would you recommand? The exact text will differ depending on the actual application you have running. That way it will match exactly in color and chemical makeup, leaving nothing to chance and making sure your vehicle’s cooling system will stay working at top efficiency for years to come. I have a Porsche Boxster 986 1997 which has pink coloured coolant. When you decide to change your antifreeze/coolant liquid make sure you replace it with the same color or that your car is compatible with other colors (see owner manual). Some such situation where this is a good idea is newer Ford vehicles with a gold color antifreeze, or GM vehicles that came with Dex-Cool. 77, No. These chemicals if added to American glycol based antifreeze can precipitate and float as particulates around your cooling system. WHAT COLOR IS ANTIFREEZE? Is there a cheaper substitute that will work safely? Autoblog explains deadly mix that will work very well when used as intended, typically at 50 % in quality! 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