Diesel fuel prices used to be less than gasoline prices. But a lot of people are now wondering why diesel fuel costs higher than gasoline. The primary reason is the increasing global demand. The other factors would be environmental restrictions and higher federal taxes. (All of these will be tackled in detail below.)

What people do not realize is that the pattern shifts. During the summer, people tend to use their vehicles for vacations; this in turn increases the cost of gasoline. During the winter, people tend to stay at home and generate a high demand for heating oil; this in turn increases the cost of diesel fuel. The correlation between heating oil and diesel is that they are similar fuel and that the price of the heating oil tends to set a floor for diesel.

For as long as the prices of crude oil and the demand for distillate fuels are maintained at a high level, the retail diesel fuel prices will in most likelihood be high, too. The Energy Information Association (EIA) has released a report on what is likely to happen for remainder of 2008 and 2009 for the United States. It states that the national average retail prices for diesel fuel will reach its highest point during the third quarter of 2008 then it will decline by the fourth quarter of 2009.

The title says it all, and here's why: first of all, everyone's feeling the pinch of fuel prices. And it's not just the average Joes, it's everyone. Yes, even those who are high up in the economic world — those who own airlines, investment companies, real estate, you name it. We're hearing about airlines asking passengers to pay for their airline food so they don't have to raise prices. Investment companies are crashing in the United States and the whole world feels the earth quake. Real estate firms are closing down buildings and liquidating their funds to stay afloat. All this because of diesel fuel prices.

As consumers, the basic basket of goods that we often purchase in the course of everyday involves diesel and other fuel products, making us susceptible to the impact of diesel fuel prices. Diesel fuel, gasoline, and oil are used not only in running cars and other transport vehicles, but also are used for cooking, heating the home, and powering diesel-powered equipment like snow-blowers, lawn-mowers, and the like. A huge chunk of expenditure goes to purchasing fuel to run these vital activities, which would justify trying to understand as much as one can about how it is priced and where the product itself is from.

With the gasoline and diesel fuel prices increasing, people have come up with various solutions to go around this situation. One of these solutions is the use of diesel fuel additives. Primarily they are known to increase lubricity of fuel, hence decreasing the wear and tear of engine parts. What is more is that it also can increase gas mileage.

Being a highly complex fuel, diesel fuel's chemical structure changes from the time it leaves the refinery to the time it is pumped into holding tanks and fuel station to the time it gets pumped into the vehicle. Oxidization and structural changes occur in the fuel molecules. The energy per unit volume of the fuel can change during this phase, and this is what will cause your engine to have poor performance.

Why Diesel Fuel Is More Expensive Than Gasoline

History has it that the gasoline prices have been higher than the diesel fuel prices. But then again, this does not always hold true. During some winters, the demand for distillate heating oil increases which also raises the price of diesel fuel-so much so that is becomes more expensive than gasoline.

In the United States since September 2004, the price of diesel fuel has been by and large higher than the price of gasoline all year round and this is due to numerous reasons. The worldwide steady increase of demand for diesel fuel and other distillate fuel oils has put pressure on the tight global refining capacity-more so with the strong demand of such products in China, Europe, and the United States.

Tracing its name from its German inventor, Rudolf Diesel, diesel fuel is what is used in the compression ignition engines of motor vehicles. It is important to a country's economy, quality of life, and national security. Any fluctuation of its price will have an effect on how people live because of its direct and indirect relationship with the other consumer products. There are different factors that determine diesel fuel prices but first we have to have an understanding of how it is produced and used.

Diesel Fuel Quality and the Environment

The movement in diesel fuel prices has had a strong impact in a variety of industries that makes use of diesel not only in running machinery, but also in transporting goods. This is because the use of diesel in transportation and energy underlie a huge number of functions in everyday life. Majority of delivery trucks, public transport vehicles like trains, buses, boats, ships and barges, and even construction and farming equipment, make use of engines that run on diesel fuel. This means that as the prices of diesel fuel soar, the costs required in facilitating the activities of which these vehicles and equipment take part in also increase. This either reduces the amount of profit these industries can have, or makes them have to choose the unfortunate option of levying costs on the retail prices they offer their consumers.

It was only in recent years that diesel fuel prices soared above gas prices. These two fuel categories used to have different peak seasons, with gasoline prices enjoying greater primacy in pricing over longer months. Gasoline then had the biggest gap in prices from diesel fuel during the summer months, when demand for gasoline peaked as a result of families taking long drives across states. Meanwhile, diesel fuels scored higher prices during the winter months, when the demand for distilled heating oils used at home increases as well. This is because distilled heating oil and diesel fuels are refined in the same facility using the same process, causing the demand for diesel fuel and distilled heating oil to act in a parallel manner.