Originally Posted by
mtlswift
The Aveo's are rated to use standard silicate antifreeze, aka standard green stuff. If it doesn't say pre-diluted, dilute it 50/50 with DISTILLED WATER.
Color doesn't mean anything nowadays, but generally, the orange stuff is Dexcool, which is an OAT antifreeze, which should not be mixed with silicate antifreeze, but still needs to be diluted 50/50 and more importantly, you MUST MUST MUST MUST MUST use DISTILLED WATER. Did I mention used distilled water?
Any residual chlorine in municipal tap water causes the organic acids in dexcool to polymerize and gum up, plus depleted OAT antifreeze can cause havoc on head gaskets. Do a google search for dexcool and head gasket failures.