Regardless of the brand of coolant, it needs to be mixed 50/50 with water. However, I have a concern. If you are getting white smoke from the exhaust, that means there is coolant getting into the combustion chamber and burning with the gas. It sounds like you have a bad head gasket.
What you need to do is check engine compression. Chances are you will find one of the cylenders has lower compression than the others. Here is a how to for checking compression:
Let me know what you find or if you have additional questions. Also, if you need the compression gauge, many parts stores will lend or rent them to you.
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Thursday, July 9th, 2009 AT 5:34 PM