Q: What is the recommended maintenance schedule for lubricating hinges, latch assemblies, and locks on doors, hood, and trunk?A: Every 3000 miles, the hinges and latch must be applied with light oil or lock lubricant. The door latch strikers should also be lubricated with a thin coat of grease to lessen wear and guarantee free movement. Also remember to lubricate the door and trunk locks with spray-on graphite lubricant.