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Old 07-26-2007, 02:48 PM   #2
LS1Hawk
 
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I did mine last month. Didn't have any buildup or signs of rust as far as I could tell, so I stuck with the red/pink coolant. I put in the Prestone extended life that meets the Dex-cool requirements and just mixed it 50/50 with distilled water. However, I know there have been issues with Dex-cool, so if you have the green already in there and it's been running fine on that you might as well stick with it.
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