Exhaust system life

The combustion of gasoline produces, among other things, water, which contributes to the development of corrosion from the inside to the outside. Exhaust system corrosion increases with decreasing exhaust gas temperature. Driving long distances with a fully warm engine and hot exhaust gases does little to no damage to the exhaust system. Otherwise, the situation is with constant trips around the city, most often with a cold engine. The front exhaust pipe, where the exhaust gases are still heated to a temperature of 800 to 1000°C, is least affected. After the reaction in the catalytic converter, they are increasingly cooled and in the end silencer of the exhaust system have a temperature of only 200-350°C. This contributes to the fact that most of the water condensate is formed in the additional silencer. It mixes with combustion products and forms aggressive acids that cause through corrosion of the muffler metal from the inside to the outside.

The front parts of the exhaust system when driving long distances are exposed to the harmful effects of thermal stress, when in the rain hot metal is constantly poured with cold showers. Metal can break or break off.

No matter how you drive your car, splash water and salt water contribute to the development of rust on the outside. Rock impact, impact with hard ground, vibration from defective or missing suspensions, or incorrect engine mounting will shorten the life of the exhaust system.