
The fuel tank capacity of a vehicle is an important consideration for any owner, especially when planning long trips. The 2008 F-250 Super Duty is a powerful diesel truck, but there are conflicting reports about its fuel tank capacity. Some sources claim it has a 26-gallon tank, while others suggest a capacity of 38 gallons. This variation in fuel tank size could be due to different models and bed lengths. Owners of this vehicle have also shared their experiences, with some opting to replace the stock tank with larger options, such as the popular Titan tank, to extend their vehicle's range.
| Characteristics | Values |
|---|---|
| Fuel tank capacity | 26 gallons, 30.5 gallons, 38 gallons |
| Fuel tank capacity (with Titan tank) | 50 gallons |
| Fuel tank capacity (with Transferflow combo fuel tank toolbox) | 80 gallons |
| Fuel tank capacity (with Aerotank) | 105 gallons |
| Fuel mileage (city) | 300 miles |
| Fuel mileage (highway) | 450-500 miles |
| Fuel mileage (mixed city/traffic) | 450-475 miles |
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What You'll Learn
- The stock tank capacity of the 2008 F-250 diesel is 26 gallons
- Owners have replaced the stock tank with a 50-gallon Titan tank
- The fuel tank capacity varies between long and short bed trucks
- The 2008 F-250 2WD 6.4L long bed gets 450-550 miles to the tank
- The 2008 F-250 diesel's fuel tank capacity is 38 gallons

The stock tank capacity of the 2008 F-250 diesel is 26 gallons
Some owners of the 2008 F-250 diesel have expressed frustration with the small stock tank capacity, especially when using the truck for hauling or towing. This has led some owners to replace the stock tank with larger options, such as the Titan 50-gallon tank, which offers increased range and peace of mind while travelling.
It is worth noting that the tank size can vary between different bed lengths of the 2008 F-250. The long bed trucks have a larger 38-gallon tank, while the short bed trucks have a smaller 28- or 30.5-gallon tank. Therefore, when considering the stock tank capacity of 26 gallons, it is important to take into account the specific configuration of the 2008 F-250 diesel in question.
Additionally, it is important to consider the impact of fuel nozzle design on the effective capacity of the tank. Some fuel nozzles may "click off" before the tank is completely full, resulting in a lower effective capacity than the physical size of the tank. This can further contribute to the perception of the stock tank capacity being insufficient for certain use cases.
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Owners have replaced the stock tank with a 50-gallon Titan tank
Owners of the 2008 F-250 Super Duty have replaced the stock tank with a 50-gallon Titan tank. This is because the stock tank is relatively small, at 26 gallons.
One owner reported that they had to replace the stock tank twice, as the first tank failed internally. Despite this, they would still recommend the Titan tank. Another owner agreed that the Titan tank was one of the best investments they made for their truck. They also noted that the hardest part of the installation was getting the fuel lines off the original tank.
The Titan tank provides extra storage and peace of mind when travelling or pulling a trailer. However, one owner reported that they had to cut part of their skid plate to make space for the Titan tank. Another owner noted that they had to get their truck calibrated for the 50-gallon tank after installation.
It is worth noting that some owners of the 2008 F-250 Super Duty have opted for larger tanks, such as a 60-gallon tank or a 115-gallon auxiliary tank.
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The fuel tank capacity varies between long and short bed trucks
The fuel tank capacity of a truck varies depending on its make, model, and year. For example, the 2008 F250 Super Duty truck has a reported fuel capacity of 26 gallons, while some users have reported a capacity of 34 gallons, 36 gallons, or 38 gallons.
It is important to note that the fuel tank capacity also varies between long and short bed trucks. Long bed trucks typically have larger fuel tanks compared to their short bed counterparts. For instance, the long bed F350 truck has a 38-gallon fuel tank, while the short bed models have a smaller fuel tank capacity of around 28 to 29 gallons.
The difference in fuel tank capacity is due to the available space in the truck's bed. Long bed trucks have more space to accommodate larger fuel tanks, whereas short bed trucks have limited space, restricting the size of the fuel tank that can be installed.
Some truck owners opt for auxiliary fuel tanks or transfer tanks to increase their vehicle's fuel capacity and range. These additional tanks can be installed in the truck bed or as a sidekick model mounted on the side of the bed. Companies like Titan, Transfer Flow, and ATI Tank offer a range of fuel tank options with different capacities and shapes to suit varying needs and bed configurations.
It is worth noting that while larger fuel tanks provide increased range and fuel capacity, they also add weight to the vehicle, which can impact fuel economy and payload capacity. Therefore, when considering fuel tank options, it is essential to strike a balance between fuel capacity and overall vehicle performance.
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The 2008 F-250 2WD 6.4L long bed gets 450-550 miles to the tank
The 2008 F-250 with the 6.4L diesel engine offers a balance of power and efficiency. While the exact fuel tank size may be uncertain, the mileage per tank is impressive. With a conservative estimate of 450-550 miles per tank, this truck can go the distance.
The 6.4L Power Stroke diesel engine in the 2008 F-250 is designed for quiet operation, utilising piezo-electric injectors and high-pressure common-rail fueling for smooth and quiet injection events. The placement of injectors and insulation in the engine compartment also help reduce noise. While still louder at idle than its gas-engine counterpart, the diesel is quieter when driving at highway speeds of 65 mph.
The 2008 F-250 2WD 6.4L long bed's mileage per tank is a testament to its efficiency. With a range of 450-550 miles, it offers peace of mind for long-distance travel. The actual mileage will depend on driving conditions, such as city or highway driving, and how heavy the driver is with the pedal.
The debate over the fuel tank size of the 2008 F-250 Super Duty highlights the importance of fuel capacity in trucks designed for hauling and towing. While the stock tank may be smaller than desired, aftermarket solutions like the Titan tank offer larger capacities, providing even greater mileage per tank.
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The 2008 F-250 diesel's fuel tank capacity is 38 gallons
The fuel tank capacity of a vehicle is an important consideration, especially when planning long-distance travel. The 2008 F-250 diesel's fuel tank capacity is 38 gallons, which provides a significant fuel volume for extended journeys. This capacity is specific to the long-bed variant of the 2008 F-250 diesel, ensuring that it can accommodate a larger fuel tank compared to the short-bed version.
The 38-gallon fuel tank in the 2008 F-250 diesel offers several advantages. Firstly, it enables a longer driving range between refuelling stops. With a larger fuel capacity, drivers can travel farther distances without worrying about running out of fuel or having to refuel frequently. This is especially beneficial for those who use their vehicles for long-distance trips, towing, or travelling in areas where fuel stations are scarce.
Additionally, the 38-gallon fuel tank can provide cost savings in the long run. With a larger fuel capacity, drivers can take advantage of fuel price variations and fill up their tanks when prices are lower. This can be particularly economical when fuel prices fluctuate, allowing drivers to maximise their fuel efficiency and stretch their fuel budget further.
It's worth noting that while the 2008 F-250 diesel's fuel tank capacity is stated as 38 gallons, the actual amount of fuel that can be filled may vary slightly. This variation can be due to factors such as the shape of the fuel tank, the design of the fuel pump nozzle, and the fuel level at which the nozzle automatically shuts off. In some cases, the usable fuel capacity may be slightly less than the stated 38 gallons.
Understanding the fuel tank capacity and its implications is essential for efficient vehicle usage. The 2008 F-250 diesel's 38-gallon fuel tank offers benefits in terms of extended driving range and potential cost savings. However, it's always advisable to refuel before the tank is completely empty and to consider factors such as driving style, terrain, and cargo weight, which can all impact the vehicle's fuel efficiency and overall range.
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Frequently asked questions
The short bed 2008 F-250 Diesel has a fuel tank capacity of 28 gallons.
The long bed version of the 2008 F-250 Diesel has a fuel tank capacity of 38 gallons.
Fuel efficiency varies depending on driving conditions and usage. Some users report an average of 14.5 miles per gallon when driving around town, while others report up to 17 miles per gallon when unloaded on highways.











































