IMHO, The Dexcool is being added to the lawsuit as there will be another defendant added to the case; that means another money source. Much like the Firestone and Frod explorer lawsuits. If the lawyers went after the GM design team I would be more acceptable of it.
The 3.8 intake manifold itself had a problem with a hot spot where heat became a cataylist for the errosion of it, had it been just the dexcool, we would see damage in more places I would think. The 3.1 and 3.4 motors had a poorly designed intake gasket design, Fel-pro has seemed to of solved it with metal gaskets. The 3.1 motors had this problem before Dexcool was put into systems. The 3.4 motors that are having problems with the intake gaskets are not always coolant related failures. Many suffer a breach in the gasket that sucks and burns oil, sometimes fairly quickly to the point of a dry sump and seized the engine from no lubrication We are pretty sure the designer of today s auto are divorced women previously married to mechanics.
Seems that in the early years 95-99 roughly, we saw a fair amount of Dexcool troubles of sludging. Some where only slugde in the neck as a TSB refers to. When we started flushing the coolant didn t look so bad. Others were very dirty at 60,000 miles. Some to the point of several flushes to clean it out. I have wondered if GM made a formula change to the dexcool. But, why some engines and not others? One thought is that in the early years, there were a lot of unknowns and mis-conceptions of the new coolant. What did owners or technicians unwittingly do or not do that may have promoted this situation.
I haven t seen problems in a while. I don t know that I ll ever truly know.
I do know that mixing the coolant types will reduce the lifespan to the lowest common denominator, in which case I would probably revert the system to the 2 year coolant.
Now fast forward to 2005 and here in 2007, Gm has gone to another new coolant, this one BLUE in color. We had a Chevy Aveo in the shop with a low coolant reservior, with a blue color fluid in it. I brought the customer into the bat and asked hime where he puts the washer solvent. After a dirty look, he pointed to the washer reservior. I showed him the coolant bottle and he says he never checked at anypoint, let alone adding anything to it. He further stated that he has only brought the vehicle to us and to a dealership that just recently closed. So we proceded to check the manual, it says, only add the proper coolant UUHHH, YEAH! So I went to the spec page for the coolant, it just says it meets astm m1825 standard. HHMMM, I ll call the dealer. This is where it became both humorous and scary at the same time. This Parts Guy say s Yeah, there some new stuff in thier using, I think it s the same as Dexcool. Then he yells to a tech at the counter about it. I hear the tech say, I think it s the same, I dunno , another one yells out, I think it s a 2 year coolant , Someones else says Yeah, that s what I thought , Then a condescending voice says, Should say it right in the owner s manual . The Parts guy says he has to research it. So I research the astm m1825 on the internet and it illudes to it being a 2 year coolant. 1/2 hour later the dealer tells me the same thing.
Thursday, February 8th, 2007 AT 4:32 PM