low coolant level in '05 Malibu 3.5

This morning I got a low coolant message.  Can I fill it to the fill line w/water untill I can get it looked at on Monday?   I have Prestone, can I use that, or do I have to use Dexcool?
 
Thanks, Justin

u can use water, dexcool, or prestone if it's compatible with dexcool coolant.