quite correct almcd007. However, if you want it back, carry on!
The fuel is of little use to anyone. As diesel is less flammable than petrol, it's dangerous to use in a diesel-powered generator, and euqally, you can;t really use it in a petrol generator for the same reason you wouldn't runa car on it.
It's possible to run a landrover Defender on a mix of fuel, but it knackers the valves after a while - pretty simple job to do, and I have run my old un on this for considerable periods of time (the amount of women who used to drive the car to the garage instead of sitting in the petrol station after realising their mistake is astounding).
Newer cars have all sorts of problems, and the longer you run the car, the worse the problem.