AntiFreeze Colors, Dex Cool..etc

[illtacticz]

I have a 2000 GTP L67 with 162XXX...I am attempting to change / add coolant to the system. The manual says only use DEX COOL. I picked up Dex Cool from Auto Zone today and put it in the Car. It was Orange. The current Anti Freeze in my car was green. I bought the car used and do not know what was in the car before.

Is this a problem to mix green and Orange Anti Freeze. Should I get the system flushed immediately...

[brandonl2000]

Mixing coolants is NOT a good idea at all. So yes, flush immediately.