Quote:
Originally Posted by '97ventureowner
But the "good old green" is not the right coolant for your engine. It does not contain the proper protection package. Yeah there are a lot of sites out there spreading half facts and such, some by lawyers trying to drum up business, but one doing any research needs to look further and scrutinize these sites. The sludgy material floating around in your overflow means the coolant got contaminated from something such as air in the cooling system, a leaking gasket (which was either a poor design or the materials were inferior) to poor maintenance practices. There are a lot of misinformed mechanics out there who make the wrong diagnosis or recommendations on a daily basis. If Dex Cool was so bad don't you think GM would've discontinued it's use years ago, especially after the class action suit ? This is the 21st century, and a 20th century coolant will not cut it in these modern engines.
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Let me start this by saying that I am not a certified GM mechanic, but I do have some experience in auto repair. My response to the Dex-Cool issue comes from personal experience while dealing with my 2003 Chevrolet Venture (3.1 V-6, granted, bad design on the gaskets). During my "adventure", I was made aware of several fellow GM owners who, ironically, were suffering similar problems with their vehicles.These vehicles all range from low mileage(53,000) to moderate/ high mileage(146,000), all with good maintenance records. My decision to go green, albeit not factory recommended, was based on my findings on the internet from a LOT of unhappy GM owners, the lawsuit against Dex-Cool(which resulted in a settlement to folks for repair of their vehicles), and several mechanics specifically "knowing about the Dex-Cool problem" as I was getting quotes on my Venture (ranging from shade-tree mechanics to big pro shops). I will definitely keep an eye on my Venture, now with the Prestone (green) anti-freeze, and if I encounter any issues, I will post it ASAP!!