Did you know that oil tanks rot from the inside out? This issue makes it difficult to know when your oil tank needs to be repaired or replaced. HomePro Inspections offers an oil tank ultrasound service which can determine the integrity of your oil tank. It is always recommended that oil tanks over 20 years old be replaced. This testing can help you better understand when your oil tank may malfunction and let you know when you should start saving to buy a new oil tank.