You diesel guys,
@Craig 85,
@SquareRoot. What is that liquid used for the exhaust? What is that stuff? I've seen it at Walmart for years and can't remember to look it up when I get home.
diesel exhaust fluid. not used in old diesels its to.. i dont actually know how it makes emissions lower from the tailpipe but it makes tailpipe emissions lower
i googled it. it is a urea/water mixture that when injected into the exhaust stream breaks down NOx into harmless water and nitrogen but its not a catalyst(not used up in a reaction) like in a gasoline car which doesnt need to be filled it just doesnt use its components up in the process its a component, thus needing refill. apparently a big reason for it to exist is to allow larger and more powerful engines and not increasingly anemic ones with a small added cost to do.This combines with filters for the physical particulate the government hates and so does me when someone rolls coal like a *******
the only time i rolled coal was on a 77 Ford LTD with a 400. But its a gas car so I was mildy concerned but i think it was running rich for a short amount of time and carbon deposits were made loose by driving HARD(Not fast)
Also just found out why some Cat converters are copious expensive, on systems without AIR injection the chemistry is much more complex as to store and release oxygen in conjuction with computer-decided AFR changes to not need air injected....
air pumps arent that expensive automakers...