Open the front case of your Seth Thomas grandfather clock and lift the pendulum up and off the unit. Use a microfiber cloth to grip the pendulum, as you don't want oils from your hands on it. When removed, the rear plate containing the clock mechanism will be exposed.
Touch all the levers on the clock mechanism lightly. Levers that move freely are gravity driven and don't require oiling.
Use the dropper included in the clock oil kit to add droplets of oil to the levers that are not gravity driven.
Apply a drop of oil to each pivot point on the gears and wheels of the mechanism.
Replace the pendulum and close the case.