- Rust weakens metal:
When metal, such as the steel used in heater lines, is exposed to moisture and oxygen, it undergoes a chemical reaction called oxidation, which results in the formation of rust. Rust weakens the metal, making it more susceptible to cracking and breaking.
- Increased pressure:
When rust builds up inside the heater lines, it can cause a restriction in the flow of coolant. This restriction causes the pressure inside the lines to increase, putting additional strain on the weakened metal.
- Leakage:
As the pressure inside the heater lines increases due to the restricted coolant flow, the weakened and brittle metal becomes more prone to cracking or breaking. This can lead to a leak, causing coolant to escape from the system.
If you suspect that your rear heater lines are rusty or damaged, it's essential to have them inspected and replaced if necessary to avoid potential leaks and maintain the proper functioning of your vehicle's heating system.
