![]() federal judge ruled that national class action status would be too complicated. The push for a national class action lawsuit against GM for problems related to their Dex-Cool coolant suffered a setback Friday, when a U.S. Federal Judge Rejects Dex-Cool Class Action Lawsuit ∞ Currently there is no recall for the intake gasket, because it is not a safety issue (at least according to the NHTSA ). GM has updated the material used in the intake manifold gasket so that it doesn't react with the Dex-Cool coolant as fast as the original gasket material. Replacing the intake manifold gasket usually costs between $700 - $1,000, mostly labor. State courts in Michigan and California already have rejected class action status for Dex-Cool lawsuits. ![]() However even statewide class action lawsuits have been running into trouble. Several class action lawsuits have been filed, both in the U.S. To see MatWeb's complete data sheet for this material ( including material property data, metal compositions, material suppliers, etc), please click the button below.DexCool Coolant and the Intake Manifold Gasket ∞ĭex-Cool is a type of coolant that many Chevrolet owners claim is corrosive and eats up critical engine parts like the heater core, radiator and water pump. This page displays only the text of a material data sheet. Note: These products are not to be used to protect the inside of potable water systems against freezing. Concentrations greater than 67 percent or less than 40 percent are not recommended. For maximum protection against freezing in extremely cold areas, a 60 percent solution (3 parts antifreeze/2 parts water) can be used. ASTM D 4985 for heavy-duty diesel service.Ĭhevron DEX-COOL Extended Life Prediluted 50/50 Antifreeze/Coolant meets:įor optimum year round protection against freezing, boiling, and corrosion, a 50 percent Chevron DEXCOOL Extended Life Antifreeze/Coolant solution (1 part antifreeze/1 part water) is recommended.Chevron DEX-COOL Extended Life Prediluted 50/50 Antifreeze/Coolant is a 50/50 mixture of Chevron DEX-COOL Extended Life Antifreeze/Coolant with deionized water.Ĭhevron DEX-COOL Extended Life Antifreeze/Coolant is recommended for use in the cooling systems of all types of automotive engines.Ĭhevron DEX-COOL Extended Life Antifreeze/Coolant meets: This allows much longer intervals between coolant changes without worrying about loss of corrosion protection. The main corrosion inhibitors in Chevron DEX-COOL Extended Life Antifreeze/Coolant have been shown to remain above 95% of their original concentration after 150,000 miles in automobiles. The life of a coolant in an automobile engine is limited by the corrosion protection ability of the corrosion inhibitors. The low level of abrasive dissolved solids in Chevron DEX-COOL Extended Life Antifreeze/Coolant results in improved water pump seal life. Since the coolant contains no phosphates or silicates, hard water deposits in the cooling system are almost eliminated. In addition to fleet tests, this product has also been tested by a major manufacturer of water pump seals, and has been found to be more compatible with the seals than any other coolant tested. In comparison field tests with conventional coolants in taxi fleets, Chevron DEX-COOL Extended Life Antifreeze/Coolant significantly reduced the need to replace water pumps during the 100,000 mile test. Replacing these inhibitors is significant for water pump life because many of these conventional inhibitors have been shown to be abrasive to water pump seals. This inhibitor system eliminates the need for silicates, phosphates, borates, nitrites, nitrates and amine additives traditionally used for this purpose. It is a nitrite-, nitrate-, phosphate-, silicate-, borate and amine-free formulation which uses Chevron’s patented carboxylate technology to provide maximum protection of the six basic metal alloys found in most heat transfer systems. ChevronTexaco DEX-COOL® Extended Life Antifreeze/Coolant, Prediluted 50/50Ĭhevron DEX-COOL Extended Life Antifreeze/Coolant is a single-phase, ethylene glycol type universal automotive engine coolant based on a Chevron’s patented long life organic corrosion inhibitor system.
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