When Im getting an oil delivery, Ive noticed a whistling sound while the tank is filling. What is that?
A. The whistle is a safety feature of your oil tank. When the deliveryman fills your tank, the oil displaces air, which leaves the tank through a separate vent. As the air escapes, it passes a device that whistles, just like a tea kettle! When the fill is complete, there is almost no air left and the whistler device quiets. The silence tells the deliveryman that the tank is full. Pretty neat!
The whistle is a safety feature of your oil tank. When the deliveryman fills your tank, the oil displaces air, which leaves the tank through a separate vent. As the air escapes, it passes a device that whistles, just like a tea kettle! When the fill is complete, there is almost no air left and the whistler device quiets. The silence tells the deliveryman that the tank is full. Pretty neat!
