The hinges and latch assemblies on the doors,
Hood, and trunk (if you have a trunk or liftgate, whichever application it is), should be liberally lubricated with a few drops of suitable light oil or lock lubricant, every three months or every 3,000 miles. Also, coat the door latch strikers with a very thin layer of grease to reduce wear and to allow smooth operating. Spray on graphite lubricant should be applied to locks for the door and trunk (or liftgate).