At what mix is the there too little of either inhibitor to protect the engine? As a precaution, both GM and Caterpillar instruct that contaminated systems must be maintained as if they contained only conventional coolant. Using the wrong coloured coolant will damage your cars performance and end up deteriorating the radiator and engine. The other question is a concern for dilution of the protection packages. Like the above comment said, you can try flushing it, but ultimately it may not work. If the coolants become mixed with DEXCOOL, however, one study showed a possible aluminum corrosion problem in certain situations. If I remember correctly, mixing good old green coolant with red DexCool makes it gel up. Most leading technologies will work very well when used as intended, typically at 50% in good quality water. While yellow, blue, orange and red are the most common coolant/antifreeze colours, you may encounter others, including purple, pink and turquoise. It is ethylene glycol based antifreeze! The concern with mixing comes from the fact that there are very different chemical inhibitor packages in use. GMC® medium trucks equipped with Caterpillar engines, have been getting a nitrite-added form of DEXCOOL (NOAT) to insure protection against wet sleeve liner cavitation-erosion.Ĭan DEXCOOL organic acid antifreeze be mixed with ethylene glycol antifreeze? General Motors® has been using this coolant technology in their cars and light trucks since the start-of-production of the 1996 model year vehicles (except Saturn®, which began in 1997). Other companies have obtained similar patents, by varying the mixture somewhat and by using similar, but not exactly the same, chemistry. The combination of a mono and dibasic carboxylic acids permitted Texaco to obtain a patent on the specific combination. It was originally called "Long Life", but a lawsuit brought by Warren Oil, who markets a fully formulated coolant under the brand name "LongLife®) forced the retraction of that term form the DEXCOOL, Texaco and Caterpillar® packaging.
You will also be harming your car’s engine, water pump, radiator, hoses. The difference between the two are the additives and the protectants that are added to each type of formula.Įquilon (owned by Texaco® and Shell®) markets a European coolant technology (OAT) that consists of ethylene glycol inhibited with a combination of sebacic acid and 2-ethylhexanoic acid supplemented with tolyltriazole. In addition, by mixing red and green antifreeze, you will end up making your car either slow. When mixing different coolants, you need to know which ones you can mix and in what combination. Both red and green coolants are ethylene-glycol based coolants. Sometimes the color is also important, which is another factor to check.
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