Regan Brown
While oversized fuel tanks can be beneficial for those who frequently drive long distances or in remote areas, there are some disadvantages to consider. One of the main drawbacks is the initial cost of purchasing and installing a larger fuel tank, which can be significantly more expensive than opting for a standard-sized tank. Additionally, some vehicles may not have sufficient space to accommodate a larger tank, and the increased weight could impact the vehicle's performance and handling. In some cases, a larger fuel tank may also affect the accuracy of the fuel gauge, leading to unexpected breakdowns if drivers are not careful. Despite these potential disadvantages, many people find that the benefits of increased fuel capacity and reduced fuel costs outweigh the drawbacks, making oversized fuel tanks a popular choice for certain drivers.
| Characteristics | Values |
|---|---|
| Cost | Expensive |
| Fuel stops | Fewer stops needed |
| Fuel costs | Cheaper to fill up where gas is cheap |
| Fuel gauge | May need recalibration |
| Vehicle compatibility | Must ensure tank is compatible with vehicle |
| Wear and tear | Reduces engine wear and tear |
| Vehicle life | Extends the life of the vehicle |
| Vehicle weight | May impact vehicle weight |
| Resale value | Can increase resale value |
| Emergency backup | Provides peace of mind in an emergency |
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What You'll Learn
Compatibility issues
Firstly, it is imperative to ensure that the oversized fuel tank is compatible with your specific vehicle model. Different vehicles have varying fuel tank designs and specifications, so a one-size-fits-all approach does not apply. Installing an incompatible fuel tank can lead to various mechanical and operational issues.
Secondly, the fuel gauge accuracy may be affected by the larger tank capacity. Some vehicles may require adjustments to the distance-to-empty or range value to maintain accuracy. While companies like S&B Tanks offer free and easy recalibration for compatible vehicles, it is important to note that this technology is not yet available for all vehicle models, including GM or Ram applications.
Additionally, compatibility issues may arise with certain vehicle features. For example, a user reported that connecting a slip tank to the diesel tank in their truck caused an error with the remote start function. This issue may be related to the vehicle's fuel level sensor, which could disable the remote start to prevent running the fuel pump dry.
In some cases, the added weight of an oversized fuel tank may also impact the vehicle's performance and handling, particularly if the vehicle already operates close to its maximum rear axle weight. This could lead to decreased fuel efficiency or even potential safety concerns.
Furthermore, the use of gravity feed or electronically controlled transfer tanks in conjunction with certain oversized fuel tanks, such as the S&B Tanks, can void the manufacturer's warranty. This is due to the risk of overfilling, which may result in tank expansion, leaks, and eventual tank failure.
When considering an oversized fuel tank, it is crucial to consult with experts or mechanics to ensure compatibility and address any potential issues. This proactive approach can help prevent unexpected mechanical problems and maintain the optimal performance and safety of your vehicle.
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Cost
The cost of an oversized fuel tank varies depending on the make and model of the vehicle, the size and material of the tank, and the complexity of the installation process.
For example, the cost of a 35-gallon oversized fuel tank for a specific vehicle is mentioned as $1,750. In another instance, a user mentions that they would be willing to pay $1,000 for a 26-gallon extra fuel tank, which equates to roughly $900 per ten gallons.
Some users have opted for cheaper alternatives, such as purchasing additional fuel cans or utilising tools like Gas Buddy to locate cheaper fuel options, rather than investing in a larger fuel tank. For instance, one user mentions that instead of spending over $2,000 on a larger fuel tank, they could spend $100 on 5-gallon fuel cans.
It is important to consider the long-term savings an oversized fuel tank can provide. With a larger fuel tank, you can reduce the frequency of fuel stops, minimise wear and tear on your engine, and prevent unexpected breakdowns due to empty fuel tanks. This can result in reduced maintenance costs and extend the life of your vehicle.
Additionally, an oversized fuel tank can improve the resale value of your vehicle, especially if you frequently drive long distances or in remote areas. The ability to carry more fuel can provide peace of mind and convenience, allowing you to fill up when fuel prices are favourable and avoid being stranded in emergency situations.
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Weight
For example, a user with a 2006 Dodge 3500 truck noted that they considered a larger fuel tank but decided against it due to the vehicle already running close to the maximum rear axle weight. They stated that the extra weight from a larger tank would be challenging to handle.
Another user with a 2012 Ford F350 truck mentioned that their thirty-six-gallon tank provides them with the distance they desires, around 450 miles per day, and they don't mind stopping for gas. They prefer to take breaks during long drives, and a larger tank would add unnecessary weight to their vehicle.
On the other hand, some users have successfully installed oversized fuel tanks in their trucks without mentioning significant weight concerns. For instance, a user with a 2008 Chevy 2500HD installed a forty-five-gallon tank, and another user with a 2013 GMC 3500 added a thirty-gallon tank under the bed, increasing their total capacity to sixty-six gallons.
Additionally, it's worth noting that some modern fuel tanks are made from high-density crosslink polyethylene, which is more lightweight and durable than metal tanks. These tanks are designed to be corrosion-resistant and are backed by lifetime warranties, addressing some of the weight and maintenance concerns associated with traditional metal tanks.
While weight is a factor to consider, it is just one of several factors that can influence the decision to install an oversized fuel tank. Other considerations include cost, vehicle compatibility, and the benefits of increased fuel capacity, such as reduced fuel stops and improved resale value. Ultimately, each vehicle and use case is unique, and a comprehensive evaluation of these factors is necessary to determine if the benefits of an oversized fuel tank outweigh the potential drawbacks related to weight and other factors.
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Fuel gauge accuracy
Fuel gauges are meant to be indicators of the quantity of fuel in a tank. However, they are not always accurate. For instance, a user on a forum pointed out that their truck's fuel gauge was "wonky". Inaccuracies in fuel gauges can be caused by several factors, such as fuel type, fuel tank expansion during warm weather, clogged fuel injectors, and more.
In the context of oversized fuel tanks, the fuel gauge accuracy may be affected by the vehicle's ability to read the fuel level correctly. A user on a forum mentioned that they plumbed a slip tank into their diesel tank, which caused the truck to think there was an error with the sensor in the tank. This resulted in the remote start being disabled.
To improve fuel gauge accuracy, it is recommended to have multiple means of cross-checking. For example, some vehicles use a combination of a fuel gauge and a fuel totalizer to monitor fuel levels. Additionally, it is important to accurately reflect the fuel entered each time, as small discrepancies can add up over time.
When considering an oversized fuel tank, it is essential to ensure compatibility with the vehicle and to keep track of fuel levels to prevent unexpected empty tanks. While an oversized fuel tank can provide benefits such as reduced fuel costs, extended vehicle life, and improved resale value, it may require additional steps to ensure fuel gauge accuracy.
In conclusion, while an oversized fuel tank can offer advantages, it is important to be mindful of potential fuel gauge accuracy issues. Proper planning, regular monitoring of fuel levels, and cross-checking with other indicators can help mitigate these issues and ensure a safe and efficient driving experience.
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Maintenance
Installation and Compatibility: Ensure that the oversized fuel tank is compatible with your vehicle. Some fuel tanks, like the S&B Tanks, are designed as direct replacements for OE fuel tanks and can be installed in the stock location without the need for complex modifications. It is important to refer to the manufacturer's instructions and guidelines for proper installation.
Fuel Gauge Accuracy: When installing an oversized fuel tank, it is crucial to ensure the accuracy of the fuel gauge. In some cases, you may need to adjust the distance-to-empty or range value to account for the larger tank capacity. S&B Tanks, for example, provide a free and easy recalibration service for compatible vehicles through their partnership with EZ Lynk.
Corrosion and Condensation: Oversized fuel tanks, particularly those made of metal, may be susceptible to corrosion and condensation over time. To mitigate this, consider fuel tanks made from alternative materials, such as high-density crosslink polyethylene. These tanks offer advantages over metal tanks, as they are designed to resist rust, corrosion, and condensation, providing enhanced durability.
Warranty Considerations: Be mindful of any warranty considerations when modifying your fuel tank. For instance, using a gravity feed tank or electronically controlled transfer tank in conjunction with certain fuel tank systems may void the warranty. Always refer to the manufacturer's warranty information and guidelines to ensure any modifications do not inadvertently affect your coverage.
Regular Maintenance: Regular maintenance of your oversized fuel tank is essential. This includes routine inspections, keeping the tank clean, and ensuring all components are secure and functioning properly. Depending on the fuel tank and vehicle, you may also need to consider maintenance tasks specific to your setup, such as recalibrating fuel sensors or adjusting fuel level programming.
By following these maintenance guidelines and staying proactive with your vehicle's care, you can help ensure the optimal performance and longevity of your oversized fuel tank.
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Frequently asked questions
Some disadvantages of an oversized fuel tank include:
- The high cost of purchasing and installing a new tank.
- The inconvenience of having to fill up a large tank, only to find cheaper gas prices later in the journey.
- Compatibility issues with certain vehicles, which may require modifications to the fuel gauge or sending unit.
The worth of an oversized fuel tank depends on individual use cases. For those who frequently drive long distances or in remote areas, the benefits of reduced fuel stops and extended range may outweigh the costs. However, for those who primarily drive in well-serviced areas with easy access to fuel, the added expense may not be justifiable.
Alternatives to installing an oversized fuel tank include:
- Using gas-saving apps like Gas Buddy to plan fuel stops around cheaper prices.
- Carrying spare fuel cans (e.g., Jerry cans) to supplement the main tank and provide extra range.
