I cannot emphasize more about the importance of oiling critical components such as the hood catch, hood and door hinges, door locks and locking mechanisms. Don't waste your time with white lithium grease, this stuff doesn’t penetrate, it just cakes on the surface collecting dirt making repairs a cruddy experience. Use oil, yes regular engine oil, this will soak in and provide very good protection. Oil squirt cans can still be found at parts stores and other places.
P.S. If things are really stuck you can make one of the very best home made penetrating oils. It can be made by mixing 50 kerosene and 50 transmission fluid. This mix is nearly as good as PB blaster, one of the best penetrating spray oils I know of.