Here are some of the specific problems that can occur if you put gas in your DEF tank:
* Engine damage: Gas can cause the engine to run too lean, which can lead to overheating and damage to the pistons and valves.
* Emissions control system damage: Gas can damage the catalytic converter and other emissions control devices.
* Fuel system damage: Gas can damage the fuel injector and fuel lines.
* Vehicle fire: Gas can cause a vehicle fire if it leaks and comes into contact with a spark or other ignition source.
If you accidentally put gas in your DEF tank, it is important to take your vehicle to a qualified mechanic as soon as possible. The mechanic will be able to drain the gas from the DEF tank and flush out the fuel system. They may also need to replace damaged components of the engine and emissions control system.