Roxilla Heavy Duty treadmill belt lubricant is formulated for modern treadmills. This lubricant extends the life of the treadmill belt and motor by offering a 100% multi-viscosity silicone formula that reduces friction and keeps the treadmill running smoothly. Instructions of Use: Lift the treadmill belt on the left side. Apply lubricant to the underside of the belt. Repeat on the right side of the belt. Tips: If required, you may need to loosen the belt for lubricating. Follow manufacturer’s instructions for lubricating treadmill belt (appropriately after 15-20 hours of use) Caution: Keep it away from the reach of the children. Keep away from direct sunlight.