Review on 🔧 ACDelco GM Original Equipment RC104 18 PSI Radiator Surge Tank Cap by Bryan King

This OEM radiator cap for my 2004 Cadillac DeVille is very difficult to remove. I can start removing the cap by turning it counter-clockwise to the safety stop, but from now on I have to press down really hard and apply a lot of torque to turn it counter-clockwise to remove the cap. I actually had to ask a friend to put pressure on it while I was shooting it. I tried it with a regular 18psi radiator cap and it went up and down fairly easily.