[tonycarreon]

it's normal if the coolant / engine is warm when you open the cap. pressure builds up. it shouldn't be too hard to tell where the coolant level is just look at the "window", shine a light into the tank will make it easier to see where the level is. if you're checking when it's hot / warm it'll be up near the "MAX" line. when you're done with the drive, check the relief valve position. after a hard drive, mine is in the up position. as it cools down it closes.

also listen to the tank after it's up to normal temp. mine sounded like someone blowing through a straw - means there's a hole in the tank (or air is getting into the system).