In 2008 my 1953 3100 AD pickup became mine with a squeaky driver's door. I could not cure it until yesterday when you told me about the lube hole in the side of the hinge. I attacked the holes in all four hinges with a straightened paper clip to remove any crud, followed by WD-40 to flush out any hardened lube and then a squirt of silicone lube made it very quiet. Thanks, Deve!