Have you ever wondered why it always seems that the exhaust pipe on a vehicle is the first to rust, yet the rest of your vehicle remains perfectly fine?
There is a reason.
You see, your car's exhaust pipe is the most exposed part of your vehicle that has not been painted or protected from corrosion.
The rest of the vehicle has.
Therefore, your exhaust pipe is constantly being hammered with water, dirt, debris, salt and various other elements; making it easy for your exhaust pipe to corrode and rust.
So if you can avoid puddles, muddy spots or other debris, you will help your exhaust pipe greatly.