Whether you use it to power a vehicle, generator, or machinery, diesel fuel is indispensable in everyday life. The biggest advantage of using this energy source is its low cost relative to the power it can generate. Alaska Petroleum in North Pole, AK, understands the benefits of diesel fuel and answers frequently asked questions about it to help you understand how it differs from gasoline.

4 FAQs About Diesel Fuel

What Is Diesel Fuel?

Diesel fuel is a mixture of hydrocarbon molecules distilled from crude oil. Unlike gasoline, which is ignited by a spark, diesel ignites as a result of heat generated by air compression. There are several types of diesel fuel, including synthetic and biodiesel, but the most common is petrodiesel, which typically is used for vehicles and machinery.    

What’s the Difference Between Premium & Standard Diesel?

Compared to standard diesel, premium diesel has a lower viscosity and higher cetane number, which indicates the combustion speed and compression needs to ignite the fuel. These characteristics translate to less ignition delay and better lubricity, leading to quicker starts and less pollution. Premium diesel also has additives that clean the injectors and prevent deposit buildup, which can affect the engine’s performance.

Is Diesel Fuel More Efficient than Gasoline?

Diesel fuel is considered more efficient because it contains about 20% more usable energy than gasoline. Because diesel has a higher density, engines work at a lower RPM to reduce frictional losses. Diesel also can improve fuel economy by 25%–30%.

How Long Can I Store Diesel Fuel? 

The primary factors that affect diesel storage life are tank location and ambient temperature. As a rule of thumb, no fuel should be kept longer than six months. If you must store diesel fuel beyond that point, ensure the tank is underground where it is safe from external factors.

Established in 1981, Alaska Petroleum has grown into one of the state’s leading fuel delivery and distribution companies. Whether you need heating oil, petroleum products, or diesel fuel, they offer prompt and reliable service to residential and commercial customers. Call (907) 488-2575 to schedule a delivery and visit their website to learn more about the oil and gas company's services.