 PB Blaster is available at a home, auto, or hardware store near you. At Blaster, they know rust. So always use Blaster products and work it like a pro. Motorrad is your first choice for vehicle thermostats, caps, sensors, and emerging technologies. In focus today, Motorrad Safety Lever Radiator Caps. Safety is key when working with hot coolant. Motorrad Safety Lever Radiator Caps utilize a lever that locks the cap to the filler neck, requiring it to be lifted before removal.