We got down to minus 25 degrees (farenheit) the last couple days and I am assuming the coolant in my 2.1 engine froze because I started it up now that the weather is better and coolant was dripping pretty heavily from the tin covering the passenger side head.

Anyone with experience related to this?  Is it likely just a freeze plug that needs to be replaced now?   Are they easy to get to?  Could it be anything else?

Thanks
Dave in Fort Collins