PB Blaster is the product everyone thinks WD-40 is. Even still, I wouldn’t use it in the place of real oil/grease/lubricant but in a pinch it’s far better than WD-40 for those odd chores.
For sure. PB Blaster is my go-to when I find a bolt on my truck that hasn't been touched since it left the factory in '88. Its a quick fix for a stuck bolt, but still not a great solution for a squeaky door hinge.