What Size Fuel Tanks Are on a Semi Truck?

Semi trucks, also known as tractor-trailers, are large commercial vehicles used to transport goods over long distances. Semi trucks are powered by diesel engines, and the size of their fuel tanks is an important factor in determining the distance they can travel without stopping for refueling.

The size of a fuel tank on a semi truck varies depending on the make and model, but typically ranges from 100 to 120 gallons. The larger tanks allow for longer trips between refueling stops, which is beneficial for long-haul truckers who travel thousands of miles at a time. The fuel tank is usually located directly behind the cab, and is often made from heavy-duty materials such as steel or aluminum to help protect it from road debris and other external forces.

In addition to the main fuel tank, some semis also have an auxiliary fuel tank mounted on the frame behind the cab. This auxiliary tank can hold up to 20 gallons of extra fuel, allowing the driver to go even further between stops. It’s important to note that this auxiliary tank may only be legally used in certain states due to laws governing maximum total capacity.

The size of a semi truck’s fuel tank is an important factor in determining its efficiency when it comes to long-distance travel. Larger tanks allow drivers to go farther without needing to stop for refueling, while smaller tanks will require more frequent stops. It’s important for drivers and fleet managers alike to take this into account when choosing a semi truck for their needs.

In conclusion, semi truck fuel tanks range in size from 100-120 gallons with some having an additional 20 gallon auxiliary tank. The size of the fuel tank is an important factor in determining how far a semi truck can travel between refueling stops and should be taken into consideration when choosing a vehicle for long haul trips.

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Stephen Dunn