I have a 1994 Pontiac Firebird Trans Am. I went to change the thermostat today and I noticed that there was black coolant coming out of the hose that goes from the thermostat housing. I just have the coolant flushed 2 months ago. Can anyone tell me why this would be? Also are the 1994 trans ams supposed to use the green coolant or dexcool? It was manufactured in 05/1994
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Friday, June 17th, 2011 AT 7:33 AM