Why Do Diesel Trucks Need Def

What is the purpose of def Diesel exhaust fluid vs. diesel fuel The importance of calculating def consumption

Do this if your Diesel's DEF system leaves you stranded - YouTube

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What happens if you put def in diesel tank?

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What's the Point of DEF Fluid in Your Truck? - Drivin' & Vibin'

Do not mess around with your diesel def system or else….

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What Happens If You Don't Put DEF in Your Diesel Truck? - Truckile

Importance calculating def consumption

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What are the benefits of diesel trucks?What does def do? why do modern diesel-engined vehicles require def? Why drive diesel? 7 benefits of diesel & what you need to knowAnyone know why some pumps have the def behind the diesel? i don't know.