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03-24-2005 #3
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- Join Date
- Dec 2002
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- Lost Wages, Nevada
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DEX does not like air in the cooling system. From what I remember of discussion, it has to do with the silica content. I had used it in my truck when I did an engine change and ended up replacing hoses on the note of about one a month from them degrading from the inside out....... appearently the silica had to do with some of this because I DID have some air in the system.
Its not GM, its the coolant that is being used.
The solution and recommendation from some engine cats that I know, is to only use this stuff in a closed system. From that point forward I have always used straight H2O and "water wetter" in the race car, and use a slightly watered down glycol mixture in the truck, only because of the fact that the truck will see freezing temperatures..... the race car never will.......
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