A squeaky door on your car can be very annoying. There are a few methods of lubricating the hinges to eliminate the squeak.
Apply hairspray or rub a bar of soap across the hinges and work them back and forth. This may eliminate the squeak.
If the door still squeaks, apply WD-40 or non-stick cooking spray and work the hinges back and forth to allow the lubricant to work through.
If the hinges are rusty and the WD-40 has had time to thoroughly penetrate the hinges, you should gently scrub at the rust with the steel wool. After the rust is removed and the WD-40 is worked well into the hinges, the squeak should be gone.
