Ameer Randolph
Ford F-150 is a popular truck model that has been in production since the 1970s. Over the years, various iterations of the F-150 have been offered with different fuel tank capacities, including a 36-gallon option. While some owners have praised the increased range and convenience offered by the larger fuel tank, others have noted that filling it up can be costly and time-consuming. In this article, we will explore which F-150 models came with the 36-gallon fuel tank option, the benefits and drawbacks of this feature, and the experiences of owners who have chosen to upgrade their fuel tanks.
| Characteristics | Values |
|---|---|
| Fuel tank capacity | 36 gallons |
| Ford F-150 models | 2021+, 2022, 2023, 2024 |
| Variants | XLT, STX, King Ranch, Tremor, Raptor |
| Engine | 2.7, 3.5, 5.0 |
| Fuel pump | Requires a new fuel pump |
| Fuel economy | Varies, e.g., 17.5 mpg, 18 mpg, 19 mpg |
| Fuel cost | Around $100-$150 to fill up |
| Additional features | EcoBoost, 4x4 |
| Price for tank | Ford sells the tank for $999 |
| Installation cost | Around $1700 with labor |
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What You'll Learn
Ford F-150 2021+ models with 36-gallon tanks
The 14th Generation Ford F-150, which includes the 2021+ models, offers 23, 26, and 36-gallon fuel tanks. The 36-gallon tank is optional and comes with the max tow package.
Several owners of the 2021+ F-150 models with 36-gallon tanks have reported their experiences with the vehicle's fuel efficiency and range. Some have noted that they are unable to fill their tanks beyond 30 gallons, despite the tank's larger capacity. This has led to some confusion and inquiries about the accuracy of the fuel gauge and mileage calculations.
The 36-gallon fuel tank option provides a significant increase in range compared to smaller tanks, such as the 23-gallon tank. This advantage is particularly noticeable when towing a trailer, as the vehicle's fuel efficiency decreases in such scenarios.
It is worth noting that some owners have expressed their preference for not letting their fuel levels drop too low, often refuelling when their tanks are still a quarter to half full. This practice may impact the accuracy of mileage calculations and could be a factor in the reported discrepancies.
Additionally, some owners have shared strategies for maximising fuel intake when refuelling. These include positioning the vehicle on an incline, with the front end higher than the back, which can allow for filling the tank closer to its full capacity.
In conclusion, the 2021+ Ford F-150 models with 36-gallon tanks offer improved range and towing capabilities. However, there have been some reported inconsistencies in fuel measurements, which may be influenced by various factors, including driving habits and refuelling practices.
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The cost of upgrading to a 36-gallon tank
For a Ford F-150, one user reported that they were quoted around $2,000 for a dealership to perform the conversion from a 23-gallon tank to a 36-gallon tank. However, another user was able to find a used 36-gallon tank in a salvage yard for approximately $100, and completed the installation themselves, requiring only a new pump assembly due to the different fuel level sending units used in the 23 and 36-gallon tanks. Their total cost for parts was $144.
For a RAM 1500, one user estimated the parts cost for upgrading from a 23-gallon tank to a 33-gallon tank to be approximately $1,200, including hoses and a pump. Another user who upgraded to a 33-gallon tank on their RAM build stated that the tank itself was an option for $495.
It is important to note that the cost of upgrading to a larger fuel tank may vary depending on your location, the availability of parts, and whether you choose to have a dealership or a specialised mechanic perform the installation. Additionally, as fuel tank technology has improved over time, newer trucks may have different fuel pump and sender requirements than older models, which could impact the cost of the upgrade.
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The process of upgrading to a 36-gallon tank
Upgrading the fuel tank capacity of your Ford F-150 can provide several benefits, including fewer fuel stops on long trips and greater flexibility in choosing when and where to refuel. While some newer Ford F-150 models come with a 36-gallon tank as a standard or optional feature, owners of older models with smaller fuel tanks may consider upgrading to a larger 36-gallon tank.
Sourcing the 36-Gallon Fuel Tank and Required Parts:
Firstly, you will need to source a compatible 36-gallon fuel tank for your specific Ford F-150 model. It is important to ensure that the fuel tank is compatible with your truck's configuration. As per user experiences, the 36-gallon tank is compatible with all truck configurations except the 122-inch wheelbase (single cab, short bed) model.
In addition to the fuel tank, you will also need to procure a new fuel pump and sender unit. The old fuel pump may not reach the bottom of the larger tank, so a new, compatible fuel pump is necessary. You may also need a new pump assembly as the fuel level sending unit differs between the 23 and 36-gallon tanks.
Installation Process:
The installation process for the 36-gallon fuel tank involves removing the old fuel tank and installing the new one. Here are the key steps:
- Remove the old fuel tank and set it aside.
- Place the new 36-gallon fuel tank in the designated position and secure it using the fuel tank straps. Ensure that the bolts are tightened securely.
- Put some fuel in the new tank. It is recommended to add around 2 gallons to start.
- Cycle the key several times to prime the new fuel pump, then start the vehicle.
- Reprogram the computer with Forscan to ensure the fuel gauge and distance-to-empty (DTE) readings are accurate.
Considerations and Costs:
Upgrading to a larger fuel tank can be a costly endeavour. The 36-gallon fuel tank itself may cost around $999 to $129, and the new fuel pump can add another $139 to the total cost. Additionally, there may be labour costs involved if you choose to have the work done by a professional mechanic or shop.
It is worth noting that filling a larger fuel tank will also result in higher fuel costs per fill-up, which can be a significant expense, especially with rising fuel prices.
Lastly, while a larger fuel tank offers the convenience of extended range, it is important to consider the weight implications. A full 36-gallon tank will add more weight to your vehicle, which may impact fuel efficiency and overall vehicle performance.
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Fuel efficiency of 36-gallon tank F-150s
The 36-gallon tank option is available for the 2021+ Ford F-150, Tremor, and Raptor models. The 2025 Ford F-150 will also feature a 36-gallon tank as standard for most trims.
Fuel efficiency for the 36-gallon tank F-150s varies depending on several factors, including driving habits, load weight, terrain, and engine type. Some owners report an average fuel efficiency of 17.5 miles per gallon (mpg) on their 36-gallon tank F-150s, while others report averages of 18.2 mpg.
The 2025 Ford F-150's strategic engineering and advanced aerodynamics are designed to maximize time on the road and reduce pit stops. The electrified F-150 variant has a smaller 30.6-gallon tank but is optimized for efficiency, delivering a combined rating of 23 mpg, which is comparable to conventional options.
The F-150's PowerBoost system, which combines efficient gas use with regenerative braking energy, also contributes to improved fuel efficiency. Additionally, Ford's 12-inch touchscreen allows owners to track fuel usage in real-time, helping them adjust their driving habits for better efficiency.
Some owners have reported discrepancies between the advertised 36-gallon tank capacity and the actual fuel volume they are able to fill the tank with, typically filling up to 30 gallons even when the vehicle has been driven down to a low level of "miles left." This may be due to a safety buffer built into the vehicle's system or the positioning of the vehicle when refueling.
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Issues with the 36-gallon tank
The 36-gallon tank has been described as a nice feature by some Ford F-150 owners, particularly for the increased range it offers. However, there are several issues that have been raised by owners of this model.
One of the main issues with the 36-gallon tank in the Ford F-150 is the accuracy of the fuel gauge and "miles to empty" indicator. Several owners have reported that the fuel gauge reads empty or shows a very low number of miles to empty, even when there are several gallons of fuel left in the tank. This discrepancy can be frustrating and misleading for drivers, who may worry about running out of fuel or may have to fill up more frequently than expected.
In addition, some owners have experienced difficulties in filling the tank completely. Some have reported that they are only able to fill the tank to around 30 gallons, even when the fuel gauge reads empty, which can affect the calculated mpg and the overall range of the vehicle.
The 36-gallon tank also presents a challenge when it comes to refuelling while parked on a hill. Older generations of the F-150 with this tank size had issues with the fuel pickup when parked on a hill with low fuel. Ford addressed this issue with a software change, allowing for a larger reserve so that the truck can still pick up fuel even when parked on a hill.
The cost of filling up a 36-gallon tank can also be a concern for some owners, with fill-ups costing upwards of $100. Additionally, the weight of the fuel can impact the truck's performance and fuel efficiency, although this can be mitigated by not filling the tank to the top.
Lastly, some owners have reported issues with the fuel tank swap process, requiring additional purchases such as a new fuel pump and sender, seal, and lock ring, which can increase the overall cost of the modification.
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Frequently asked questions
The 2021, 2022, 2023, and 2024 Ford F-150 models have the option of a 36-gallon fuel tank.
Ford sells the tank for $999, but the total cost with labor can be around $1700.
Yes, it is possible to upgrade to a 36-gallon fuel tank. You can find a used tank at a salvage yard for $100-$150, but you will also need a new fuel pump.
The larger tank means fewer fuel stops on trips and more flexibility in choosing when and where to refuel.
