I had a faulty sending unit to my dash causing my temperature gauge to spike and making me throw my clutch and swerve off the highway in a panic. I replaced the sending unit and decided to add a Acutemp gauge to monitor the actual water temperature. I found a nice OEM dual port that connects to the block and measures the return water coming out of the block to the radiator. I knew the temperature would be higher but I thought I could still use it to measure any differences once I found out what the normal level would be. What I have found so far is that the temperature pegs out my meter past 130 degrees C! So I don't even know what the actual temp is. I was really surprised to see that it could very well be steam at that point and not fluid water. My sending unit has my dash gauge in the normal range now and my fluid levels are perfect. Just curious if anyone has any opinions or real numbers for the water temperature at the point where it returns into the radiator. If it is actually stem, I would have thought that there is no way the pressure could be contained with simple rubber and screw clamps.