Loud hood hinges

My 69 Dart hinges moaned and groaned from the day the car was made. My friends Dart all did it too. It's a common trait of that style hinge. It's the springs making the sound. I tried every kind of grease, lube, and snake oil there is and nothing did any good. They are what they are. I've opened and close the hood so many times over the years, I no longer hear them make a sound. lol!