I must have bad luck and an old style without the little metal "ears" aid in turning the lock ring. Mine ended up loose with the spring loaded part cocked to one side before I gave up before I made it worse.

All I wanted to do was remove it before taking off the hood to replace the liner so I could lay the hood on blankets on the ground...!

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Garage:

2017 Chevy Colorado Diesel (nanny state emissions)
2005 Volvo S40 T5 AWD, 77k
1987 Mercedes-Benz 300D turbodiesel, 4 sp auto, 156k - 28.7 mpg
1996 Tracker 4x4, 2 door, 16v, 3 sp auto. 113k - 28.6 mpg

WARNING: this post may contain dangerous free thinking.