Last week after drivin home from class I popped the hood and checked the radiator cap. I got a Stant cap(16lbs) with the pressure relief lever. I lifted the lever and noticed no pressure escaping. I removed the cap and dipped my finger in the coolant and it was just lukewarm, not Hot like I expected it to be. Is this normal, I mean it has been very cold out the past few weeks and as far as my cooling system, 1yr old coolant, I got a 180 tstat(less than a yr old) and a Flex fan, the radiator is in good shape and looks like it's been replaced somewhere down the road by previous owner. The car warms up fine and the temp gauge seems to stay below halfway mark(pos stocker gauge). I'm worried about the cap not seeming to release pressure, could it be shot?