your car would not start or it would stall out quickly. You would need to take a fuel sample and check for small crystals of sugar in it. The sugar tends to stick to the insides of the pump, filter, and injectors.
The sugar would lay on the bottom of the tank so the only way to know would be to remove the tank and remove the sending unit to gain access to the inside of the tank.
Putting sugar in a gas tank will mean a trip to the garage since the sugar will ruin the gas filter and go into the engine.
Someone probably put sugar in your gas tank.
The tank will have to be removed, and flushed. then I would invest in a locking gas cap.. The whole sugar in the tank thing appears to be an urban legend/myth so tank removal or replacement would be unnecessary. Read more at: http://www.snopes.com/autos/grace/sugar.asp
Not sure about the insurance aspect but i do know that if ad or when sugar is put in a gas tank, the motor does not seize. You'll need to take out the gas tank and install a new one to be good to go again.
Sugar in the gas tank will not cause the engine to fail because sugar does not dissolve in gas. It will get pulled thru the gas line and into the fuel filter(s) and depending on how much sugar is in the tank, will plug the fuel filter sooner or later. This will cause the car to stall or not stay running. You can either replace the fuel filters until the sugar is gone or get the car to a mechanic and have the gas tank removed and flushed out. This is not a do-it-yourself project. You could also drive the car to the mechanic and then have the fuel filter replaced while they are flushing the gas tank.
put sugar in the gas tank
no it would either blow up, not start or ruin your engine
Sugar sits on the bottom of the tank like sand unless you have some water in the tank also.
Sugar
put sugar in the gas tank
Plugs up the fuel filter if the sugar makes it that far.