Whatever you do , don't mix the old ethylene glycol based green coolant with the newer OAT style coolants such as Dex Cool. Dex Cool and other extended life coolants were specifically designed for your modern engine. Here is a link to an article stating a good reason to stick with extended life coolants such as Dex Cool :
http://free-auto-repair-advice.blogs...label/Dex-Cool .Make sure whatever you use meets GM specifications for coolant as there is no such thing as a "universal replacement coolant". The newer style coolants that are used in vehicles that require them have special proprietary protection packages tailored to your engine's makeup. Using something other than recommended can damage your engine.
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Thought for the Day… Alcohol does not make you fat - It makes you lean... against tables, chairs, floors, walls and ugly people.
If a prostitute here in America loses her job to a prostitute in India , is that considered "outwhoring"??-Jay Leno