Is there a problem with the Dexcool coolant?
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. GM has redesigned the gaskets that the problem has now been fixed. GM still uses Dex-Cool coolant and there is no longer a problem with gasket coolant interaction.
What’s the problem with the Dexcool cast iron engine?
Shops reported other problems with DexCool engines besides the 3.1 and 3.4-liter engine. Specifically, shops reported sludge buildup, especially in cast iron engines. But after a thorough investigation, it turns out that the only time sludge builds up is if the engine is low on coolant.
What was the problem with GM Dexcool gaskets?
So it’s true that DexCool caused gasket leaks, but the real problem was incompatibility between the plastic and the coolant. 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. GM has redesigned the gaskets that the problem has now been fixed.
Are there any consumer affairs reviews on Dexcool?
DexCool can pay the bill for all their haters but not on Consumer Affairs! I switch to green after replacing heads and intake gaskets at 150k on my 99 Malibu 3.1. NP since. Bye DexCool! Helpful 8 peoplefound this review helpful Not sure how to choose?
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. GM has redesigned the gaskets that the problem has now been fixed. GM still uses Dex-Cool coolant and there is no longer a problem with gasket coolant interaction.
So it’s true that DexCool caused gasket leaks, but the real problem was incompatibility between the plastic and the coolant. 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. GM has redesigned the gaskets that the problem has now been fixed.
Shops reported other problems with DexCool engines besides the 3.1 and 3.4-liter engine. Specifically, shops reported sludge buildup, especially in cast iron engines. But after a thorough investigation, it turns out that the only time sludge builds up is if the engine is low on coolant.
Do you have to flush your Radiator with Dexcool?
This way you don’t introduce any contaminants. But it won’t hurt to use a universal long life coolant either, just drain the radiator and block, then refill, no flush. A little residual dexcool won’t hurt anything near as much as contaminants from flushing would.