2. Now, let’s address the Environmental Issues.
Remember even ‘cleaned’ exhaust fumes are still poisonous. The system is designed to release everything away from the passenger compartments. You don’t want it in there! Everyone knows, or should know, carbon monoxide is deadly.Centers for Disease Control and Prevention, CDC has a big section on this topic.
You don’t want to be in confined places, nor do you want a leak somewhere in the exhaust system. If the exhaust gets into the passenger cabin it will make you very sick, perhaps even kill you. You’ll know it is in your cab if you smell the exhaust. First, roll down the windows; next you will need to get it checked right away!
Source: www.ferrotektruckequipment.com
It isn’t the smell that causes the issues; the exhaust waste contains many pollutants and small particulates. The catalytic converter is designed to scrub some of these bad substances before being released. Of course, diesel engine vehicles are designed with systems to clean and remove the excessive waste. However, catalytic converters don’t last forever, they tend break down and will eventually need to be replaced. This is one the key parts that must be replaced as needed, but they are expensive. It is highly recommended to keep your air filters and oil changed regularly.
Source: www.americantruckchrome.com