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Problems with Red Stuff
Posted by Stephen Goldberger [Email] (more from Stephen Goldberger) on Tue, 7 Mar 2006 11:04:23
In Reply to: $12 a gallon or so....also a question, whitesaab, Mon, 6 Mar 2006 15:08:58
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The biggest problem is if air is getting into the cooling system, you will get brown sludge forming. If your overflow tank is not pressurized, that's a sign that air can be sucked in past a weak radiator cap gasket. Cars and trucks with pressurized overflow tanks (like all Saabs since I can remember) won't be bothered by brown sludge. Also, some iron water pump impellors (especially Chrysler) will erode away using the red stuff.
G05 (Yellow stuff - aka Mercedes Benz coolant) and G-48 (Blue stuff, aka Saab coolant) use the same chemicals (but in different proportions) - an organic acid based (sebacic acid) inhibitor similar in function to the organic acid based (carboxylate) inhibitor in Red Stuff. G04 and G48 also have some silicate, the inhibitor in old fashioned green stuff. Also there is a new Prestone "Universal" which is a carboxylate based inhibitor with some silicate added. That might be an alternative to G-05 or G-48.
posted by 24.28.3...
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