If the coolants become mixed with DEXCOOL, however, one study showed a possible aluminum corrosion problem in certain situations.

Most leading technologies will work very well when used as intended, typically at 50% in good quality water. 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. 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. Both red and green coolants are ethylene-glycol based coolants.

Green coolant in toyota