3/11/2023 0 Comments Dexcool coolantThese repairs would likely involve parts like the intake manifold and/or manifold gaskets, throttle body gaskets, radiator cap, heater core, water pump and other parts of the cooling system.ġ995-2003 Models with 3.1L or 3. Also, a higher percentage of antifreeze can cause the engine to overheat because specific heat of antifreeze is lower than that of water.ĬAUTION: Richer antifreeze mixtures cannot be measured with normal field equipment and can cause problems associated with 100 percent ethylene-glycol.The class covers three different groups of GM vehicles which suffered from engine damage caused by the use of Dexcool engine coolant. Repairs involving intake manifold gasket failures, engine coolant sealing issues, and sludge (a rust-like material) are covered by this proposed settlement. ![]() A higher percentage will freeze at a warmer temperature. Maximum protection against freezing is provided with a 68 percent antifreeze concentration, which prevents freezing down to -67.7☌ (-90☏). If percentage is lower, engine parts may be eroded by cavitation. The antifreeze concentration must always be a minimum of 44 percent, year-round in all climates. In addition, 100 percent ethylene-glycol freezes at -22☌ (-8☏).ĥ0/50 Ethylene-Glycol and Water - Is the recommended mixture, it provides protection against freezing to -37☌ (-34☏). The increased temperature can result in sever engine damage. This temperature is hot enough to melt plastic. ![]() These act as insulation causing temperature to rise to as high as 149☌ (300☏). Without water, additives form deposits in system. Water also freezes at a higher temperature and allows corrosion.ġ00 percent Ethylene-Glycol - The corrosion inhibiting additives in ethylene-glycol need the presence of water to dissolve. This is for purpose of heat transfer only. Pure Water- Water can absorb more heat than a mixture of water and ethylene-glycol. Shell DEX-COOL 50/50 Extended Life Antifreeze/Coolant is a single-phase, ethylene glycol based, extended life, universal automotive engine coolant based on. ![]() The coolant performance of various mixtures follows: The required ethylene-glycol and water mixture depends upon climate and vehicle operating conditions. Mixing of coolants other than specified (non-HOAT or other HOAT) may result in engine damage that may not be covered under the new vehicle warranty, and decreased corrosion protection. If it loses color or becomes contaminated, drain, flush, and replace with fresh properly mixed coolant solution.ĬAUTION: Mopar® Antifreeze/Coolant, 5 Year/100,000 Mile Formula (MS-9769) may not be mixed with any other type of antifreeze. This coolant offers the best engine cooling without corrosion when mixed with 50% ethylene-glycol and 50% distilled water to obtain a freeze point of -37☌ (-35☏). Mopar® Antifreeze/Coolant, 5 Year/100,000 Mile Formula (MS-9769), or the equivalent ethylene-glycol base coolant with organic corrosion inhibitors (called HOAT, for Hybrid Organic Additive Technology) is recommended. The use of aluminum cylinder blocks, cylinder heads, and water pumps requires special corrosion protection. ![]() Then coolant carries the heat to the radiator where the tube/fin radiator can transfer the heat to the air. Glycol base in addition to several anti-rust and corrosion agent to protect the. The coolant must accept heat from engine metal, in the cylinder head area near the exhaust valves and engine block. DEXCOOL ALFA ANTI FREEZE CAR COOLANT RED - 1 LTR. The cooling system is designed around the coolant. Still correct.boring, but correct.ĬAUTION: Use of Propylene-Glycol based coolants is not recommended, as they provide less freeze protection and less corrosion protection. I posted this in another thread a year or so back.
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