I have a four inch crack in the top of the radiator, causing the car to leak. The radiator top is metal.
This is pretty common. The metal gets very thin from cooling system wear, and the tank cannot hold the pressure any more and splits. I recommend replacing the radiator and testing the complete system for any other problems.
Have a car question? Get free advice from our top-rated mechanics.
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%