dex cool coolant good for pontiac grand prix

offers redrawn diagrams as well as factory diagrams. Another View: In an attempt to save my radiator, hoping that the Dex Sand, as I call it, would get stirred up enough that I could trap it, I installed a coolant filter to try and catch all the gunk. That saves a lot of time because you don’t have to refer back to the component locator or circuit locations. It is Dex Cool sludge that has hardened and settled to the bottom of the radiator and eventually partially plugged it.

redraws factory wiring diagrams in color and includes the component, splice and ground locations right in their diagrams.

If you’re tracking down a wiring issue, is the better choice. In most cases, their diagrams are right from the factory manuals. They include wiring diagrams and technical service bulletins. Dex-Cool can react with air and iron to oxidize to form “sludge.” However,Ī and are professional-grade shop manuals-period. After the gasket redesign, failures plummeted. GM continues to use Dex-Cool in all factory fills and dealers are required to use Dex-Cool when performing service. GM went through several rounds of gasket redesign before coming up with a plastic formulation that worked. But is that the fault of Dex-Cool or the use of an inappropriate type of plastic? History proves that Dex-Cool does not damage gasketsĮven though everyone blamed Dex-Cool as the cause of gasket damage, history has proven that the leaks were caused by faulty gasket design. The Dex-Cool coolant may have reacted with the plastic. Some have claimed that chemicals in the Dex-Cool softened the plastic, eventually eating through it and causing the leak. Over time, the plastic softened, causing coolant to leak into the crankcase or out of the engine. Specifically, GM changed their intake manifold gaskets to a plastic carrier with silicone sealing strips around the edge. However, the root cause of the intake manifold gasket failure was the poor design of the gasket and not the Dex-Cool. The hole in this gasket was NOT caused by Dex-Cool. It’s true the intake gaskets in GM vehicles failed at an extremely After that, Dex-Cool gained a horrible reputation as a bad coolant and many shops recommended removing Dex-Cool and refilling with another type of long lasting coolant. Class action lawsuits were filed and GM offered settlement. GM switched over to Dex-Cool in their engines and shortly thereafter, the intake manifold gaskets in those same GM vehicles failed at an astounding rate. In addition to providing protection against freezing, Dex-Cool provides anti-corrosion and anti-foaming additives to prevent galvanic action and corrosion from forming in a vehicle’s cooling system. Dex-Cool coolant is based on an organic acid technology that provides longer life than traditional silicate based formulas. Repair Topics > Cooling System Service > What is Dex-Cool coolant? What is Dex-Cool coolant? Dex-Cool® coolantĭex-Cool coolant is a registered trademark for a coolant used in GM vehicles.

Dex cool coolant good for pontiac grand prix