27/07/2023
Why is there rust on your radiator cap?
⌦Lack of Proper Coolant cause rust.
Using the proper coolant and antifreeze in your car is.
But with this car I found that an overflow tank has sufficient coolant in it to keep the radiator full even at cold temperatures. Without an overflow tank, as the coolant contracts, air will enter the cooling system through the radiator cap when it cools down. The air mixed with the metal in the cooling system will cause rust to develop.
If excess rust is present on and around the radiator cap, such as on radiator core tubes or holes, it likely needs to be replaced. Take your car to your mechanic for diagnosis 👨🔧
