How do you add water to a 2006 Chevy colbalt?

Answer 1

You don't add plain water to the cooling system. If cooling system needs to be topped off, open the reservoir cap when engine is cool and add a mixture of 50% antifreeze and 50% clean water to the full-cold line. If you're having to add often, have a trusted mechanic check it out. You may have a serious problem that could get expensive if not taken care of soon.