No one has ever experienced or proved that pouring some sugar in the gas tank has destroyed a car’s engine. If someone ever has had a grudge on you over something and does this, no need to panic. Just get your gas tank removed and cleaned. The gas tank would be as good as it was before & would be back to its proper functioning.
The sugar won’t dissolve in the gas tank, however, it can clog the fuel filter and the fuel lines disrupting the fuel flow in your car engine. This would result in disrupting the normal startup which might not let your car engine start but won’t ever destroy it. It can also clog up the vital parts of your engine.
If someone ever gets this unfortunate of getting sugar in their gas tank would have to get a lot of their cars vital parts to be opened & cleaned to run them smoothly. It couldn’t be said that they won’t be left in a condition to be either cleaned. However, the fuel filter must be replaced for the perfect functioning of the fuel pump and combusting process.
Save Your Engine From The Following Substances
There have been multiple different experiments which might & for sure will kill the car’s engine. Hydrogen peroxide H2O2 will give your car performance as if it had a NOS attached but just for a while, the higher combustion rate due to the higher oxygen level will destroy and burn up the engine and there would be no coming back, rather you’d have to replace the engine to free your car from just sitting on its axles.
Adding coke or an already diluted sugary mixture to the car will destroy its engine as the fuel filter and the lines won’t be able to stop the damage and it might clog the engine lines, resulting in killing a car’s engine.