Top 5 Ranked Products
We analyzed millions of Amazon products to handpick the top recommendations just for you.

#1 Ranked
Hot Shot's Secret Everyday Diesel Treatment 16 Ounce Squeeze Bottle (HSSEDT16ZS)
Price: $17.95
Rating: ★★★★★
ASIN: B00E64I7SI
Score: 93%
Overview:
The Hot Shot's Secret Everyday Diesel Treatment is a specialized fuel additive designed to enhance the performance and longevity of diesel engines. Offered in a convenient 16-ounce squeeze bottle, this product aims to provide a comprehensive solution for diesel fuel systems by addressing several common issues associated with diesel fuel. Its formulation not only boosts cetane levels, thereby improving fuel economy, but also adds lubricity to protect critical engine components like the fuel pump and injectors. Additionally, it works to prevent rust and corrosion, ensuring optimal engine health.
This diesel treatment is marketed as an every-tank solution, making it easy for users to incorporate into their regular maintenance routine. By dispersing moisture and adding stability to fuel, it helps to mitigate problems related to water contamination and fuel degradation. While there are no user reviews available to gauge real-world effectiveness, the product's features suggest it could be a valuable addition for diesel vehicle owners looking to enhance performance and protect their engines.
Pros:
- Cetane Boost: Increases cetane levels up to 7 points for improved fuel economy.
- Lubricity Enhancement: Adds lubricity to protect fuel system components, promoting longevity.
- Corrosion Prevention: Prevents rust and corrosion, contributing to overall engine health.
Cons:
- Limited Information: May lack detailed usage instructions or guidelines for optimal results.
- Potential Overuse: Users may be uncertain about the appropriate frequency of application for best results.

#2 Ranked
Archoil Diesel Fuel System Kit - AR6500 Diesel Treatment (40.6 oz) + AR6400-D Diesel Fuel System Cleaner
Price: $59.90
Rating: ★★★★☆
ASIN: B087JSLFNC
Score: 96%
Overview:
The Archoil Diesel Fuel System Kit is designed to enhance the performance and longevity of diesel engines by providing two key products: the AR6500 Diesel Treatment and the AR6400-D Diesel Fuel System Cleaner. Together, these products aim to restore critical components of the fuel system, such as injectors, turbochargers, and diesel particulate filters (DPF). The kit also claims to boost cetane levels, which can lead to improved engine performance and fuel efficiency. However, it is important to note that the AR6400-D is not intended to address HEUI injector stiction, for which a separate product, the AR9100 Friction Modifier, is recommended.
The dual-functionality of this kit may appeal to diesel vehicle owners looking to maintain or enhance their engine's performance. However, potential users should be aware of the specific limitations regarding HEUI injectors and the absence of user reviews, which may raise concerns about the effectiveness and user satisfaction of the products.
Pros:
- Comprehensive Kit: Includes both a diesel treatment and a fuel system cleaner for complete maintenance.
- Performance Boost: Claims to improve fuel efficiency and overall engine performance by restoring key components.
- Cetane Improvement: Enhances cetane levels, which can lead to better combustion and reduced emissions.
Cons:
- Limited Application: AR6400-D does not address HEUI injector stiction, requiring an additional product for that issue.
- Specific Usage Instructions: Users must be aware of the correct applications and limitations, which may complicate usage for some.

#3 Ranked
Archoil AR6500 Diesel Treatment (40.6 oz) - Treats 400 Gallons - Additive for All Diesel Vehicles
Price: $44.95
Rating: ★★★★☆
ASIN: B09KS9JMDP
Score: 88%
Overview:
The Archoil AR6500 Diesel Treatment is a specialized additive designed for all diesel vehicles, packaged in a 40.6 oz bottle that treats up to 400 gallons of fuel. This product aims to optimize performance and fuel economy by addressing the challenges posed by modern diesel fuels. Its formulation not only enhances combustion efficiency but also targets the post-combustion system, including critical components like the turbocharger and diesel particulate filter (DPF), thereby preventing premature failures and reducing the frequency of regeneration cycles.
The AR6500 stands out with its incorporation of advanced combustion modifier technology, which is claimed to improve power output and throttle response. Additionally, it offers cleaning, lubrication, and protection for the entire fuel system, including high-pressure common rail (HPCR) systems. This comprehensive approach could be particularly beneficial for diesel vehicle owners looking to maintain or enhance their engine's performance and longevity.
Pros:
- Comprehensive Treatment: Treats up to 400 gallons, making it economical for frequent use.
- Post-Combustion Cleaning: Specifically cleans the turbo and DPF, reducing maintenance issues.
- Performance Enhancement: Increases power and throttle response through advanced technology.
Cons:
- Limited Availability: May not be readily available in all retail locations.
- Potential Overuse Risks: Frequent use may lead to unintended consequences if not properly dosed.

#4 Ranked
Hot Shot's Secret Diesel Extreme, 1 Qt (Packaging May Vary) (P040432Z)
Price: $18.97
Rating: ★★★★☆
ASIN: B00IUGFZJW
Score: 84%
Overview:
Hot Shot's Secret Diesel Extreme is a specialized fuel additive designed to enhance the performance and longevity of diesel engines. This product focuses on cleaning and lubricating critical components of the fuel system, including injectors and pumps, while also boosting cetane levels for improved combustion efficiency. Its formulation includes military-grade rust and corrosion inhibitors, making it a robust solution for maintaining engine health. The ease of use, requiring only a simple application during refueling, adds to its appeal for diesel vehicle owners.
The product claims to not only clean fuel injectors and prevent deposits but also stabilize fuel by dispersing moisture, which can lead to rust and corrosion. By increasing cetane ratings by up to seven points, it promises enhanced power and fuel economy, along with a reduction in the frequency of diesel particulate filter (DPF) regenerations. However, it is essential to note that while the product has promising specifications, the absence of user reviews may raise questions about its real-world effectiveness.
Pros:
- Cleans Fuel System: Thoroughly cleans and lubricates engine components, enhancing overall performance.
- Boosts Cetane: Increases cetane levels for better combustion and improved fuel efficiency.
- Easy to Use: Simple application process makes it convenient for regular use.
Cons:
- Limited Information on Long-term Effects: Insufficient data on long-term performance benefits.
- Potential Compatibility Issues: May not be suitable for all diesel engines or fuel types.

#5 Ranked
Hot Shot's Secret EDT+ Winter Defense, 7-in-1 Anti-Gel Diesel Fuel Additive – Prevents Gelling, Protects Diesel Fuel System, Diesel Additive Improves Cold Starts, Boosts Cetane, 16 oz.
Price: $16.97
Rating: ★★★★☆
ASIN: B0BJ7QQ29W
Score: 84%
Overview:
Hot Shot's Secret EDT+ Winter Defense is a 7-in-1 anti-gel diesel fuel additive designed to enhance diesel fuel performance during cold weather. This 16 oz. product is engineered to prevent gelling, improve cold starts, and protect the fuel system from moisture and corrosion. It works effectively in extreme temperatures, ensuring reliable operation for diesel engines. The additive not only enhances lubricity and cetane ratings but also cleans fuel injectors, making it a comprehensive solution for diesel fuel maintenance.
The formulation is specifically designed to address the challenges posed by cold weather, with capabilities to minimize wax crystal formation and disperse moisture. This ensures that the fuel can flow freely, even in low temperatures, thereby preventing fuel line freeze-ups. The ease of use, with a treatment ratio of just 2 oz. per 25 gallons, adds to its practicality, making it a convenient choice for diesel vehicle owners looking to maintain their fuel systems in winter conditions.
Pros:
- Prevents Gelling: Minimizes wax crystal size, allowing fuel to flow at temperatures as low as -20°F.
- Cold Start Improvement: Boosts cetane ratings and lubricity, enhancing engine performance in subzero temperatures.
- Fuel Injector Cleaner: Cleans and protects fuel system components, promoting engine longevity.
Cons:
- Concentration Requirement: Requires careful measurement for optimal use, which may be inconvenient for some users.
- Temperature Sensitivity: Effectiveness may diminish if not used according to specified temperature guidelines.
Product Information & Tips
Overview
The search for the best additive for diesel fuel revolves around enhancing the performance and longevity of diesel engines. Diesel fuel additives can serve multiple purposes, including improving fuel efficiency, reducing emissions, and preventing engine wear. With varying formulations available in the market, understanding the benefits and functionalities of these additives is crucial for vehicle owners and fleet operators alike.
The effectiveness of a diesel fuel additive can significantly influence engine performance and maintenance costs. As diesel engines are often subjected to rigorous conditions, the right additive can help mitigate common issues such as injector fouling, fuel stability, and cold weather performance. Therefore, evaluating the best options requires a thorough understanding of the key criteria that define their efficacy.
Key Criteria
1. Fuel Efficiency:
- Enhancing fuel efficiency is critical as it directly impacts operating costs. Additives that improve combustion can lead to better mileage, thus saving money in the long run.
2. Emissions Reduction:
- With increasing regulations on emissions, additives that reduce harmful exhaust emissions are essential. They help meet environmental standards and contribute to a cleaner atmosphere.
3. Cold Weather Performance:
- Diesel fuel can gel in cold temperatures, leading to starting issues. Additives that improve cold weather performance ensure the engine operates smoothly in various climates.
4. Injector Cleaning:
- Clean fuel injectors are vital for optimal engine performance. Additives that prevent or clean deposits on injectors can enhance fuel atomization and combustion efficiency.
5. Corrosion Inhibition:
- Diesel fuel can cause corrosion in fuel systems. Additives that provide corrosion protection extend the lifespan of engine components and reduce maintenance costs.
Frequently Asked Questions
Q1: What are the benefits of using diesel fuel additives?
A1: Diesel fuel additives can improve fuel efficiency, reduce emissions, enhance cold weather performance, clean injectors, and inhibit corrosion, leading to better engine performance and longevity.
Q2: How often should I use diesel fuel additives?
A2: It is generally recommended to use diesel fuel additives with every tank fill-up or as per the manufacturer's instructions, especially if you notice performance issues.
Q3: Are all diesel fuel additives the same?
A3: No, diesel fuel additives vary in formulation and purpose. Some focus on improving efficiency, while others are designed for cleaning or protecting engine components.
Q4: Can diesel fuel additives help with fuel storage?
A4: Yes, certain additives can stabilize diesel fuel, preventing degradation during storage and extending its shelf life.
Q5: Is it safe to use diesel fuel additives in all diesel engines?
A5: Most additives are safe for use in standard diesel engines, but it’s best to check compatibility with the engine manufacturer’s recommendations to avoid potential issues.