Barely cover the bottom of your slow cooker with water.

Place the turkey in the crock-pot.

Place oil between skin, and season as desired.

Cover and cook on low for 8-12 hours depending on the size of the bird. You could start this the night before and free up oven space, and you'll be ready for an early afternoon feast if desired. The turkey is done when an internal temperature of 165 degrees F is reached in the breast and thigh.