Mercedes Mullins
While it is not recommended to burn automatic transmission fluid (ATF) as fuel, some people use it as an alternative fuel source in diesel engines. This practice is more common in older diesel engines with mechanical fuel injection and lower pressures, as common-rail fuel systems are more temperamental and can be damaged by the transmission fluid. Some people add a small amount of transmission fluid to their diesel fuel as a lubricant or detergent, but this is also not recommended due to potential negative effects on the injection system and the risk of increased pollution and harmful exhaust fumes.
| Characteristics | Values |
|---|---|
| Is it possible to put transmission fluid in diesel fuel? | Yes, it is possible to put transmission fluid in diesel fuel, particularly in older diesel engines. |
| Why might someone do this? | To preserve the fuel pump and add detergents and lubricity to the fuel. |
| Are there any potential issues? | Yes, there are potential issues with putting transmission fluid in diesel fuel, especially in newer or common-rail engines. This includes the risk of increased pollution, harmful exhaust fumes, and extreme wear on injection systems. |
| Are there alternatives? | Yes, there are alternative additives that can be purchased to add lubricity to diesel fuel. |
Explore related products
What You'll Learn
Used automatic transmission fluid as an alternative diesel fuel
Used automatic transmission fluid (ATF) has been considered as an alternative fuel source for diesel engines, particularly older diesel engines (pre-common-rail). The idea is that ATF can add detergents and lubricity to the fuel, improving performance.
While it is not recommended by fuel manufacturers, some people have experimented with using ATF as a primary or secondary fuel source. Richard Snyder, for example, has been using a 90% ATF and 10% diesel mixture in his '02 7.3L Power Stroke for nearly two years without any reported problems. He acquires used ATF from local shops and dealerships, and the pumping process only takes a few minutes of his time.
However, it's important to note that common-rail fuel systems are more temperamental and may not handle ATF well. As such, it is not advised to use ATF in newer diesel engines. Additionally, burning ATF as fuel may increase pollution and cause harmful exhaust fumes. The long-term effects of using ATF as fuel are still unknown, and while there have been no reported engine failures, there is a risk of extreme wear on injection systems and potential for costly repairs.
For those seeking to improve lubricity, alternative options such as B5 or B20, or diesel additives like Stanadyne, Howes, Hot Shot, or Power Kleen, are recommended. These additives are designed to be safe for diesel engines and will not cause the same potential issues as ATF.
Ensuring Diesel Fuel Quality: Testing Methods and Best Practices
You may want to see also
Explore related products
The potential risks of using ATF as fuel
Using automatic transmission fluid (ATF) as fuel in diesel engines is a questionable practice that carries several potential risks. Firstly, ATF is not designed to be burned as fuel and may not burn as readily as diesel fuel, potentially leading to a loss in engine power and performance. This is especially true for newer diesel engines with common rail fuel injection systems, which operate at much higher pressures than older mechanical diesel engines.
Secondly, ATF contains additives, such as detergents and friction modifiers, that are intended for transmission maintenance and not for combustion. These additives can leave behind ash deposits and compromise the integrity of the fuel system, leading to premature component wear and potential engine damage. The zinc content in some ATF brands can also foul injectors over time, affecting engine performance and fuel efficiency.
Another risk to consider is the colour of ATF. As most ATF is red, using it as fuel in areas where off-road diesel is also dyed red could lead to legal issues and complications. Furthermore, while ATF may provide additional lubrication and cleaning benefits, these advantages can also be achieved through the use of dedicated diesel additive products, such as Stanadyne or other lubricity additives, without the associated risks of using ATF.
While some individuals have reported success in using ATF as fuel in older diesel engines, there has been little to no mainstream testing conducted on the practice. Therefore, using ATF as fuel in diesel engines remains a risky proposition that may not be suitable for all diesel owners, especially those with newer, more complex engine systems.
Signs of a Failing Diesel Fuel Pump
You may want to see also
Explore related products
The potential benefits of using ATF as fuel
While it is not recommended to use ATF as fuel, some people believe that it can be beneficial in certain situations. Here are some potential benefits of using ATF as fuel:
Improved Engine Performance: Some individuals have reported that adding ATF to their diesel fuel has improved their engine's performance. One person shared that their truck's engine ran better and their mileage increased from 13.8 MPG to 21-22 MPG after using ATF. Another individual noted that their dad's engine became much quieter after adding ATF to his diesel fuel. These improvements may be attributed to the lubricating properties and detergents found in ATF, which can help clean the injectors and other components in the fuel system.
Increased Fuel Efficiency: In addition to improved engine performance, some people have reported increased fuel efficiency when using ATF. For example, one user claimed that their mileage increased significantly after adding ATF to their diesel fuel. This can result in cost savings at the pump, making it a more economical option for some vehicle owners.
Cooler Engine Temperatures: According to an individual named Snyder, who uses a blend of 90% used ATF and 10% diesel, his engine's EGTs (Exhaust Gas Temperatures) are 100 degrees cooler compared to when he used diesel fuel alone. This suggests that ATF may help reduce engine temperatures, which could potentially lead to improved engine longevity.
Reduced Noise: Aside from the improved performance and fuel efficiency, some users have noticed a reduction in engine noise after adding ATF to their diesel fuel. This could be beneficial for those who prefer a quieter ride and want to minimize the noise impact on their surroundings.
It is important to note that while some people have reported these benefits, others have cautioned against the use of ATF as fuel due to potential negative consequences. ATF was not designed to be combusted, and it may leave behind ash or hydrocarbon deposits that can cause premature component wear and compromise the integrity of the fuel system. Therefore, while there may be perceived benefits in the short term, it is essential to carefully consider the potential risks and long-term effects before using ATF as fuel.
Testing Diesel Fuel: Anti-Gel Methods and Techniques
You may want to see also
Explore related products
The long-term effects of running ATF as fuel are unknown
While some people have been using automatic transmission fluid (ATF) as an alternative to diesel fuel, it is not recommended. The long-term effects of running ATF as fuel are unknown.
According to Francis Healy of the Chevron Fuel Technology Team, the root cause of using ATF with diesel fuel is the need for lubricity. Healy states that while early mixes of ultra-low sulphur diesel (ULSD) lacked lubricity, this is no longer an issue as fuel manufacturers now add the necessary lubricants during refinement. Despite this, some people continue to consider using ATF as a fuel alternative due to unstable diesel prices.
Richard Snyder, for example, has been using a 90% ATF and 10% diesel mixture as his primary fuel for nearly two years without any reported problems. He acquires used ATF from local shops and dealerships, and his setup allows him to take the kit with him on road trips. However, it is important to note that common-rail fuel systems cannot handle ATF due to their temperamental nature.
While there have been no reported engine failures from burning filtered, used ATF as fuel, the long-term effects remain uncertain. Jeff Garmon of Garmon's Diesel Performance agrees that used ATF works and believes that running a 100% mixture would not affect performance or mileage in certain vehicles. However, he acknowledges that it is definitely risky as no mainstream testing has been conducted on burning filtered, used ATF as fuel.
As a result, it is important to consider the potential risks and uncertainties associated with using ATF as fuel. While it may seem like a cost-saving measure, any gains at the pump could potentially be lost if catastrophic repairs are needed down the line. Therefore, it is recommended to use clean diesel fuel or alternative lubricity additives, ensuring the longevity of your engine.
Winter Diesel: Has Maverik Winterized Its Fuel?
You may want to see also
Explore related products
The legality of using ATF as diesel fuel
The use of ATF as diesel fuel in vehicles is a practice that has been discussed and debated by many mechanics and car enthusiasts. While some people advocate for its effectiveness, particularly in older diesel engines, there are also concerns about its legality.
Firstly, it is important to understand that ATF, or Automatic Transmission Fluid, is not intended to be used as a fuel source. It is designed as a lubricant and detergent for transmission systems. In the past, when diesel engines had mechanical fuel injection and lower pressures, adding ATF to the fuel was a common practice to improve pump and injector performance and longevity. However, modern diesel engines have evolved significantly, with higher injection pressures and different materials used in their construction. As a result, the composition of ATF has also changed, and it is now formulated not to burn.
Additionally, there are environmental considerations. Burning ATF can result in the release of hydrocarbon deposits and soot, which may have negative consequences for the environment. This is because ATF contains paraffinic oils, which are long chains of hydrocarbons. As a result, using ATF as diesel fuel may not comply with emissions standards and regulations, further complicating its legality.
While some individuals have reported successfully using ATF as their primary fuel source, it is important to note that the long-term effects of this practice are still unknown. Mechanics and car enthusiasts generally advise against it, recommending the use of diesel fuel additives specifically designed for modern engines. These additives, such as Stanadyne or Marvel Mystery Oil, provide the necessary lubricity and detergent benefits without the potential legal and environmental concerns associated with ATF.
In conclusion, while the use of ATF as diesel fuel may have been a common practice in the past, it is now largely discouraged due to the advancements in diesel engine technology and the changing composition of ATF. The legality of this practice is questionable due to tax and environmental regulations, and the potential risks of engine damage and increased repairs further outweigh any potential benefits. It is always advisable to consult with reputable mechanics and follow manufacturer recommendations for fuel and additive usage to ensure the optimal performance and longevity of your vehicle.
Straining Water from Diesel: Effective Techniques and Best Practices
You may want to see also
Frequently asked questions
It is not recommended to put transmission fluid in your diesel fuel, especially in newer diesel engines.
Transmission fluid is not recommended as a diesel fuel alternative because it can cause extreme wear on injection systems and may not be safe for emissions systems.
Transmission fluid has been used in older diesel engines to add detergents and improve lubricity. However, modern diesel fuel already includes the necessary lubricants, so this is no longer necessary.
Yes, there are commercial diesel additives available that can improve lubricity and add detergents to your fuel, such as Stanadyne, Howes, Hot Shot, and Power Kleen.
