I think for Singapore only, Diesel fuel oil is cheap
yes
Diesel fuel is usually expensive than gasoline because, diesel undergoes many expensive processes in the refinery than gasoline.
PRICE GOUGING Taxes
They are expensive to build but relatively cheap to run because the fuel costs are lower.
Diesel gas gives more mileage (miles per gallon) than regular gasoline. You must, of course, have a vehicle that has a diesel engine because diesel fuel cannot be used in an engine that runs on regular gas! Depending on local government taxation policies, in some countries diesel is cheaper to buy than regular gas whilst in other countries it is more expensive! Diesel fuel is thicker and "stickier" than regular gas so, if a vehicle's fuel system ever needs cleaning - fuel tank, fuel lines, fuel pumps and fuel injectors - it is a more difficult and expensive job to do on a diesel vehicle.
diesel is more expensive
Diesel engines run on diesel fuel. Gasoline will destroy a diesel engine.
The most common fuel used is Bunker C / #6 fuel oil because of it's cheapness. However, it is not as good for the environment as Marine Diesel. Marine Diesel is also several times more expensive. This is why it in not used in ships.
Because the fuel companys are a bunch of oportunistic crooks. the same rule aplys to diesel fuel.
is oil cheap or expensive
No. Diesel cars are pollutive and the price of diesel is very expensive. many people do not like diesels at all because of the cost of fuel and the noise the car will make.
In 1985, the average price of diesel fuel in the United States was approximately $1.20 per gallon. Prices varied by region and were influenced by factors such as supply and demand, crude oil prices, and local taxes. This price reflects a period when diesel fuel was generally less expensive than gasoline.