Technician A says that the DEF (diesel exhaust fluid) reservoir will need to be filled with a minimum amount of fluid to operate above idle until the diesel exhaust fluid tank has been refilled. Technician A says that once the DEF level becomes critical, the engine will shut down. Who is right?

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The Answer of Technician A says that the DEF (diesel exhaust fluid) reservoir will need to be filled with a minimum amount of fluid to operate above idle until the diesel exhaust fluid tank has been refilled. Technician A says that once the DEF level becomes critical, the engine will shut down. Who is right?

Technician a Says That the DEF (Diesel Exhaust Fluid) Reservoir