Is Dex Cool still a problem?
GM still uses Dex-Cool coolant and there is no longer a problem with gasket coolant interaction. So contrary to the ranting, DexCool IS the recommended coolant for GM engine. Shops reported other problems with DexCool engines besides the 3.1 and 3.4-liter engine. The “rusting” usually NOT affect newer aluminum engines.
Is the Dexcool coolant good for a GM engine?
GM still uses Dex-Cool coolant and there is no longer a problem with gasket coolant interaction. So contrary to the ranting, DexCool IS the recommended coolant for GM 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.
Why is Dexcool bad for an aluminum engine?
The “rusting” usually NOT affect newer aluminum engines. But, running ANY engine when it’s low on organic acid type coolant cause form sludge. After GM came out with Dex-Cool, ALL the car makers jumped onto the reformulation bandwagon.
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.
GM still uses Dex-Cool coolant and there is no longer a problem with gasket coolant interaction. So contrary to the ranting, DexCool IS the recommended coolant for GM 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.
The “rusting” usually NOT affect newer aluminum engines. But, running ANY engine when it’s low on organic acid type coolant cause form sludge. After GM came out with Dex-Cool, ALL the car makers jumped onto the reformulation bandwagon.
Are there any lawsuits against the GM DEX COOL system?
GM will not comment on the pending lawsuits but continues to claim that Dex-Cool represents an improvement over traditional coolants. Nevertheless, the automaker has alerted mechanics that vehicles operated for 15,000 to 20,000 miles with low coolant levels “may be susceptible to the formation of a rust like material in the cooling system.”
Who is to blame for DEX COOL not working?
Deborah blames the costly repairs on GM because in her view the automaker “installed what they knew as faulty equipment, namely a plastic item in an engine unit and Dex-Cool antifreeze that does not work.”