Dexcool coolant booling temp7/2/2023 ![]() ![]() ![]() GM still uses Dex-Cool coolant and there is no longer a problem with gasket coolant interaction. 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. Manages engine temperature, prevents freezing and protects the engine from corrosion. 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. Designed to work with all GM ® vehicles 1995 & newer (GM ® -approved), most Ford ® vehicles 2011-2018 and most Chrysler ® vehicles 2013 & newer. to run a differant anti-freeze in it, you have to flush out. its a 50/50 mix for all gm cars and trucks.you can add this coolant to any brand of anti-freeze. In thousands of cooling systems, I am yet to see a problem caused by Dexcool. they say you cant mix different coolants but you can go to auto-zone etc, and buy a cheaper anti-freeze for general motors products. So it seems like what VW is saying is that with these engines somewhere around 40☏ (22° C) below the boiling point is a reasonable margin. If I understand the true problem correctly, ".GM also started using plastic intake manifold gaskets with a silicone bead around the ports. GM has used Dexcool coolant in many millions of vehicles since 1996. The recommended coolant (G13), when diluted 50/50 has a boiling point of 228° F (109° C) at atmospheric pressure and 248° F (130° C) at 15 PSIG (roughly 2 bar or twice atmospheric pressure). 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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