I would not use Dexcool in a vehicle where it came with something besides Dexcool from the factory.Ī flush at PepBoys would likely get you a flush using tap water and universal coolant added. And change the coolant as listed in owners manual. And you have to make sure cooling system is air tight. Shell DEX-COOL Extended Life Antifreeze Coolant Is A Single-phase, Ethylene Glycol Based, Extended Life, Universal Coolant Based On A Unique Extended Life. Zerex Dex-Cool Antifreeze/Coolant is proven to maximize engine life in passenger cars and light trucks, and is approved for use in GM, Ford, Chrysler and SAAB vehicles with cooling systems that require an orange antifreeze with Organic Acid Technology (OAT). There were issues with a few engines that needed some new design gaskets. Zerex from Valvoline is the 1 selling OEM-approved coolant brand. Your article and the discussion of problems is very old news. Peak Global Lifetime is the same coolant minus that chemical. Https:/ / news04/ 2006/ 08/ gm_dexcool.htmlĭexcool contains an aggressive plasticizer chemical. GM has been having problems with Dexcool since they started using it in 1996. Lets say you keep cruising with Dexcool mysterious problems will happen like a leak in the radiator.a leak in the coolant reservoir.etc. Pepboys seems best equipped around here to perform these fluid flushes. The best thing you can do is get the "Dexcool" coolant flushed and replaced with Peak Global Lifetime. Im in the livery ed to own a Suburban.know a lot of people with these vehicles. The system is still clean all round with zero issues at 135,000 miles, which is stil less than half that of the Avalanche. I flushed out the factory coolant on the Envoy when I replaced the factory thermostat at 56,000 miles and again when I replaced the water pump at 115,000 miles. I no longer have the Avalanche, but I personally know the person who now has it with 293,000 miles now and he's got no issues with it either. For assistance contact your nearest GM Trade Parts Dealer or email us at. thermostat or water pump, the system was thoroughly flushed and back flushed and refilled with premixed Dexcool. Port Melbourne, Victoria, 3001 Australia. Whenever a cooling system repair was performed, e.g. The LM7 5.3L I had on an old Avalanche didn't cause me any grief, nether did the LL8 4.2L in my Envoy, both of which have been running Dexcool since they left the factory. I, personally, have never had a problem with Dexcool. Newer gasket material, primarily HNBR with aluminum frames addressed the problem, but until that point both GM and some aftermarket manufacturers were paying for warranty claims. The plastic would soften, swell and eventually leak. The root cause was air in the system, which caused acid to form when mixed with the coolant and attacked plastic carrier gaskets. By the early 2000s, manifold gasket failures on the 3.1L/3.4L as well as 4.3L, 5.0L and 5.7L using plastic carrier gaskets with moulded silicone was common. SHELLZONE ® DEX-COOL ® EXTENDED LIFE Designed for automotive engines and many electric and hybrid vehicles to provide superior protection against corrosion, freezing and boilover. GM still uses Dex-Cool coolant and there is no longer a problem with gasket coolant interaction.Back in '96, GM made the "mistake" of calling Dexcool a "lifetime" coolant. GM has redesigned the gaskets that the problem has now been fixed. 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. 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. If I understand the true problem correctly, ".GM also started using plastic intake manifold gaskets with a silicone bead around the ports. I have a 2015 dodge journey limited and its given me nothing but problems. I see even some folks here at BITOG refer to it as "DeathCool". Coolant/Antifreeze Dex Cool 50/50 Pre-Diluted Blend: 50/50 Color: Orange. I've been reading about the DexCool "problems", the lawsuit, etc.
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