congrats.......make sure you put the proper coolant in there. Do not mix the different types.......if you have dexcool, stay dexcool for now. If you have green stay with the green.
Like the man says, BUT if you do have dexcool, find the leak. Dexcool does react with air in the system and really sludge up your cooling system.
"Time is a great teacher, but unfortunately it kills all its pupils."