1. Immediately stop: Turn off the ignition and do not attempt to start the engine. Running the engine with gasoline in a diesel system will cause extensive damage.
2. Contact a professional: Call a roadside assistance service or a tow truck. They can safely transport your vehicle to a qualified mechanic. Do *not* attempt to drive the truck.
3. Do not try to fix it yourself: Trying to drain the fuel tank yourself is risky and could result in further damage or injury. A professional mechanic has the proper equipment and expertise to handle this situation safely and effectively.
4. Explain the situation clearly: When you contact roadside assistance or the mechanic, clearly state that you accidentally put gasoline in your diesel truck. This will help them prepare appropriately.
The extent of the damage depends on how much gasoline was added and whether the engine was started. At a minimum, you'll need a complete fuel system flush, including the tank, lines, fuel filter, and potentially injectors. More extensive damage to the engine is also possible. Expect significant repair costs.
