I flushed it when I got it and was that a fn mess. Everytime I take the cap off or resovior cover and look in there, it looks like shit. Everyone assumes the problem was Dex-Cool, when in fact, the problem was the type of gasket material combined with the use of Dex-Cool and reusing the old intake bolts. GM still uses Dex-Cool coolant and there is no longer a problem with gasket coolant interaction. Anyone else have this problem in the cage Ive had my GMC Jimmy for a year or so and I cant get over how bad the Dexcool orange seems to be for the engine. So it’s true that DexCool caused gasket leaks, but the real problem was incompatibility between the plastic and the coolant. GM has redesigned the gaskets that the problem has now been fixed. I think the problem is when people mix regular coolant with dex-cool and it causes some sort of sludge or they run the dex-cool too long and it creates sludge. I have used it in other vehicles and it worked fine. But all references to those settlements seem to be removed since 2003. Everyone assumes the problem was Dex-Cool, when in fact, the problem was the type of gasket material combined with the use of Dex-Cool. Messages 25,078 Location ON, Canada eh 2 I don't think it's bad. at least eight states in which a DEX-COOL®-related Class Action Lawsuit has been filed: Missouri, California, New York, New Jersey, Texas, Illinois (State and Federal), Pennsylvania and Michigan. it was not uncommon to fail a seal in 600. Meanwhile, Antifreeze is a general term used for coolants that can work with a wider range of vehicles and may be either Inorganic Acid Technology (IAT) or Hybrid Organic Acid Technology (HOAT) coolants. DexCool solved the repeated water pump seal issues that existed in the very early days of the liquid cooled engines. WHY GM car and truck owners continue to complain that the DEXCOOL corrodes and clogs radiators and radiator caps, erodes water pumps, rots radiator hoses. For some reason (and NO ONE agrees on why this happens) the gasket material and Dex-Cool interact with one another, causing leaks." and ".So it's true that DexCool caused gasket leaks, but the real problem was incompatibility between the plastic and the coolant. Dexcool is an Organic Acid Technology (OAT) coolant designed for use in GM vehicles manufactured from 1996 onwards. If I understand the true problem correctly, ".GM also started using plastic intake manifold gaskets with a silicone bead around the ports. VW\'s G-12 In the end of this thread I posed a question maybe better suited for this thread, any difference between the 2, both are orange and used in Diesel engines. I see even some folks here at BITOG refer to it as "DeathCool". I've been reading about the DexCool "problems", the lawsuit, etc.
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