F 450 4WD Super Duty V10-6.8L VIN D (2004)
Heater Core: Technician Safety Information
WARNING:
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Carbon monoxide is colorless, odorless and dangerous. If it is necessary to operate the engine with the vehicle in a closed area such as a
garage, always use an exhaust collector to vent the exhaust gases outside the closed area.
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The heater core inlet hose will become too hot to handle if the system is working correctly.
