Railroad do not get 400 mpg with diesel fuel. They are rated in gallons per mile and there are way too many variables to give a single overall answer.
only the cars that run on flammable fuel have spark plugs the only exceptions are diesel powered
BioDiesel is the only "green" fuel that can be used.
No. Only around 1% of US cars run on diesel. Most run on gasoline (petrol) or a mix of gasoline and ethanol.
Only special built cars. You could run a pre-07 emissions diesel vehicle on jet fuel - if you did it to a diesel with a Diesel Particulate Filter, you'd ruin the DPF within an hour of operation. However, doing so would be illegal, as on-highway diesel engines are required by law to run #2 ULSD.
Only diesel should be used but in a pinch or emergency kerosene can be used. Diesel is usually number 2 fuel and kerosene is #1 fuel. By the way jet fuel is kerosene. So dont use it in a diesel to often, the higher octane rating could damage the engine over time.
only if it has a diesel engine. A gasoline engine will not run properly on diesel fuel.
Yes, but since biofuel is a substitute for diesel its only used in diesel burning cars.
I think for Singapore only, Diesel fuel oil is cheap
Gasoline and ordinary diesel fuel are both fossil fuels, so almost all cars run only on fossil fuels.
Any diesel fuel is unleaded. There are summer and winter diesel in some countries. Diesel on cars work till 400000 - 500000km if the owner takes care. On ships it may last 50 years. If you are asking about a diesel engine running on unleaded gasoline (petrol) it will only run for a manner of minutes, if at all.
There are different grades of diesel fuel and heating oil but in general they have similar qualities including the flash point. The flash point is the temperature at which the fuel ignites on its own, without a spark. Diesel fuel used to only be available along truck routes. Before diesel fuel became easily available everywhere, people with diesel engine cars would use heating fuel, but would have to make sure it is clean, passing it through a filter to remove foreign particles.
Only some domestic cars, certain fords and gm's can run on regular gasoline or E85 ethanol made from corn. Then you have the diesels that ONLY use diesel fuel.