Fuel is any combustible matter, to include coal, oil, gas or wood. A substance that produces useful energy
Petrol is a type of fuel derived from crude oil through a process called fractional distillation. It is different from fuel oil, which is a heavier type of fuel typically used for heating or powering ships and large machinery.
fossil
It is not.
The density of fuel oil can vary depending on the type and grade of oil. Typically, the density of fuel oil ranges from about 0.85 to 1.05 grams per cubic centimeter.
Crude oil.
fossil fuek
That would be Diesel fuel
Gas, Oil and Coal
Shale oil is an oil distilled from shales and used as fuel
centrifugal
unleaded fuel
It would depend on the type of burner in your oil furnace and the type of jet fuel. I recommend that you contact the manufacturer of your furnace first.