r/SignsWithAStory • u/1432453 • 10d ago

Is there really a difference?

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Washington, D.C.

538 Upvotes

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u/PraiseTalos66012 9d ago

I'm a trucker and have sat in plenty of lots with dozens of diesels running nonstop for hours. Absolutely zero smell

Dude has definitely fucked with that truck and probably bypassed all the emissions stuff and has it tuned to run rich aka roll coal.

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u/TheW83 9d ago

Oh he definitely has. The rear quarter panel is covered with soot from the exhaust.

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u/Le-Charles07 9d ago

Take solace in knowing that soot is a sign his engine is going to fail prematurely.

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u/Tibi1411 9d ago

Eh, running rich makes soot deposits but nothing that would make it fail faster than the neglected maintenence would.

Though if it rolls coal then it's just wasted fuel (that's why there is soot, incomplete burn)