If the door squeaks every time you open it, the hinges could be bound by corrosion. If so, squirt the hinges with WD-40 to free them, and move the door several times to work in the lubricant. Once the hinges are in working condition, just squirt them with white lithium grease or motor oil, operate the door several times and then wipe any excess away. Check the door latch for corrosion. Many door latches now have a nonmetallic composite mechanism, which should be lubricated with a shot of silicone spray. Корманди оила