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WALKER® EXHAUST SYSTEMS: Why Exhaust Systems Wear Out
Most exhaust system deterioration occurs primarily from the inside out.
The exhaust system is one of the very few parts on a vehicle that continues to wear even though the engine is not running and the vehicle is stopped.

MANY FACTORS CAN AFFECT THE LIFE OF A VEHICLE'S EXHAUST SYSTEM
  • Uncontrolled environment (weather, temperature, road condition)
  • Vehicle usage
  • Condition of exhaust components within the system
  • Manufacturer's materials

A MAJOR CAUSE OF FAILURE FOR EXHAUST SYSTEM PARTS IS INTERNAL CORROSION
  • Acidic moisture is produced by the combustion of air and gasoline
  • Acid build-up occurs when the engine and exhaust system don't have a chance to fully warm up
  • Because these acids are in contact with the inside of the exhaust system, the deterioration of these parts occurs primarily from the inside out