5 Best Diesel Fuel Additives for Lubricity – Boost Performance and Protect Your Engine

When it comes to caring for your engine, think of diesel fuel additives as the guardian angels that ensure its well-being. Imagine a shield that not only boosts performance but also protects your valuable asset from wear and tear.

Curious to know which additives stand out among the rest? Stay tuned as we unravel the top 5 options that offer superior lubricity and engine protection, giving you peace of mind on the road ahead.

Hot Shots Secret Everyday Diesel Treatment 4 Ounce 24 Pack (HSSEDT04Z24)

For those seeking a reliable daily engine care solution that enhances fuel economy and boosts cetane levels by up to 7 points, the Hot Shots Secret Everyday Diesel Treatment 4 Ounce 24 Pack (HSSEDT04Z24) is the optimal choice. This product is designed to treat up to 400 gallons of diesel fuel, ensuring clean injectors, added lubrication, acid neutralization, and protection against rust and corrosion. With components like cetane booster, lubricity protection, injector cleaner, corrosion inhibitor, demulsifier, and stabilizers, this ashless formula has no adverse effects on your engine and complies with low sulfur content requirements. Suitable for various diesel engines including agricultural, construction, vehicles, marine vehicles, racing vehicles, RVs, semi-trucks, and small engines, this product has received positive feedback for its effectiveness in maintaining engine performance and preventing issues related to low sulfur diesel fuel.

Best For: Those looking to enhance fuel economy, boost cetane levels, and maintain diesel engine performance across various vehicle types.


  • Boosts cetane up to 7 points, improving fuel economy.
  • Treats up to 400 gallons of diesel fuel for long-lasting engine care.
  • Effective in preventing rust, corrosion, and maintaining clean injectors.


  • Some users have mentioned concerns about the bottle cap sealing and pouring design.

Liqui Moly (2002-20PK) Super Diesel Additive – 300 ml, (Pack of 20)

If you're seeking a premium diesel fuel additive that ensures optimal engine performance and protection, consider the Liqui Moly (2002-20PK) Super Diesel Additive – 300 ml, (Pack of 20). This additive is designed to provide diesel hi-test cetane boost, keeping your fuel system and combustion chambers clean while preventing deposits. It also helps maintain clean injectors, preventing seizing, and contains antioxidants to prevent corrosion. Suitable for all diesel engines in vehicles, machinery, and stationary engines, it has been tested compatible with turbochargers and is suitable for low-sulfur diesel fuels. Users praise this product for its ability to preserve engines in extreme conditions, improve fuel mileage, and enhance engine performance. Add 150ml per tank approximately every 600 miles for optimal results, and enjoy the benefits of smoother, quieter engine operation.

Best For: Those looking to improve fuel mileage, maintain clean injectors, and preserve diesel engines in extreme conditions.


  • Boosts cetane levels for optimal engine performance
  • Prevents deposits and keeps fuel system clean
  • Compatible with turbochargers and suitable for low-sulfur diesel fuels


  • May require regular usage for long-term benefits

2 Bottles DPF Filter Purge (500ml x 2)

Enhance your diesel engine's performance with the economical and convenient solution of 2 Bottles DPF Filter Purge from MotorPower Care. This diesel additive offers high performance to help with regeneration, keeping your Diesel Particulate Filter (DPF) clean from carbon and soot. By maintaining a clean DPF, you can improve fuel economy and ensure optimal engine efficiency.

The 500ml x 2 bottles provide a cost-effective way to protect your engine and enhance its longevity. With positive feedback on product effectiveness, many users recommend incorporating this DPF Filter Purge into your regular maintenance routine. While some reviews suggest mixed results for severe DPF cases, overall, this additive is praised for its ability to keep your DPF clean and your engine running smoothly.

Best For: Diesel engine owners looking to improve fuel economy and maintain engine efficiency with a cost-effective DPF cleaning solution.


  • High performance for DPF regeneration
  • Economical way to keep DPF clean from carbon and soot
  • Positive feedback on product effectiveness


  • Mixed reviews on long-term effectiveness

Power Service 3025-12 Diesel Kleen+Cetane Boost, 32 Fluid Ounces, 12 Pack

Optimize your diesel engine's performance and longevity with Power Service 3025-12 Diesel Kleen+Cetane Boost, a powerful fuel additive that boosts cetane levels and enhances fuel system lubrication. This 32-ounce 12-pack effectively cleans dirty injectors, preventing sticking and improving fuel economy. Suitable for all diesel fuels, including ULSD and biodiesel blends, it boosts cetane by up to 6 numbers, resulting in increased power and reduced downshifting. Users have reported up to a 2-mile per gallon increase in fuel mileage. Endorsed by Cummins, this additive is ideal for various diesel vehicles, offering enhanced lubrication to fuel injectors and protecting fuel pumps. Simply add 8 ounces per 25 gallons of diesel for optimal performance year-round.

Best For: Those looking to improve diesel engine performance and fuel economy while protecting fuel injectors and pumps.


  • Boosts cetane levels by up to 6 numbers
  • Cleans dirty injectors and prevents sticking
  • Endorsed by Cummins for improved performance


  • Not suitable for winterizing or anti-gelling diesel fuel

Red Line 70802 85 Plus Diesel Fuel Additives – 12 Ounce (12 Pack)

For those seeking enhanced engine performance and extended protection, the Red Line 70802 85 Plus Diesel Fuel Additives are an ideal choice. These additives, designed for all diesel engines, compensate for low-sulfur fuels and contain a cetane booster for added power. With the ability to treat up to 100 gallons per tank, this pack of 12 bottles is a powerful solution.

Red Line 85 Plus Diesel Fuel Additives include powerful lubricants, detergents, seal conditioners, and rust preventatives, reducing wear in low sulfur fuel by 75%. They comply with federal low sulfur content requirements and clean fuel injectors with high-temperature detergents. By increasing power and efficiency by 5%, these additives offer significant benefits for your engine's performance and longevity.

Best For: Those looking to improve fuel efficiency, increase power, and enhance engine performance in their diesel vehicles.


  • Boosts fuel cetane numbers for added power
  • Reduces wear in low sulfur fuel by 75%
  • Cleans fuel injectors with high-temperature detergents


  • May require frequent usage for optimal results

Factors to Consider When Choosing Diesel Fuel Additives for Lubricity

When selecting diesel fuel additives for lubricity, you should consider factors like the additive's compatibility with your engine and its overall importance in maintaining engine performance.

It's crucial to understand how to apply the additive correctly for optimal results and to reap the benefits of improved lubrication.

Make sure to choose additives that are specifically designed to enhance lubricity and protect your engine from wear and tear.

Factors for Lubricity Additives

Considering the demands of modern diesel engines, selecting the appropriate lubricity additive is crucial for safeguarding engine components and optimizing performance.

When choosing a lubricity additive, it's essential to consider its ability to improve the lubricating properties of diesel fuel, reducing friction and wear in the engine. Look for additives that can protect vital fuel system components like injectors, pumps, and pistons from damage.

Additionally, these additives can enhance fuel efficiency by ensuring smoother operation and optimal combustion. Given that modern diesel engines require additional lubrication due to low sulfur content in diesel fuel, the right lubricity additive is key to prolonging the life of your engine and avoiding costly repairs.

Importance of Lubricity

To ensure optimal performance and safeguard vital engine components in modern diesel engines, the lubricity of diesel fuel additives plays a critical role in reducing friction and preventing wear and damage.

Adequate lubricity provided by these additives is essential for protecting fuel pumps, injectors, and other critical parts from premature failure and costly repairs.

Since low sulfur diesel fuels lack natural lubricity, it becomes necessary to supplement them with lubricity enhancers in the form of additives to maintain engine performance.

These additives create a protective film on metal surfaces, effectively reducing friction and extending the lifespan of fuel system components.

Improved lubricity not only leads to smoother engine operation but also enhances fuel efficiency, resulting in overall better engine performance.

Additive Application Tips

Choosing the right diesel fuel additives for optimal lubricity involves considering essential factors to ensure engine protection and performance. To start, always follow the manufacturer's recommended dosage instructions for best results. Additionally, think about the frequency of application based on your vehicle's usage and maintenance schedule to maintain consistent lubricity benefits.

Be cautious not to overdose on additives, as this can result in potential issues; stick to the specified amounts to prevent adverse effects. Store diesel fuel additives properly in a cool, dry place away from direct sunlight to preserve their effectiveness.

Lastly, monitor your vehicle's performance regularly after using diesel fuel additives to evaluate any changes in lubricity and overall engine efficiency.

Lubricity Benefits Overview

Wondering how diesel fuel additives with lubricity benefits can enhance your engine's performance and longevity?

Lubricity additives play a crucial role in improving the lubricating properties of diesel fuel, safeguarding fuel system components from wear and reducing friction. By enhancing lubricity, these additives can prevent premature failure of vital engine parts such as fuel injectors and pumps.

Maintaining optimal engine performance, especially in high-pressure fuel systems, becomes easier with diesel fuel additives that offer lubricity benefits. The smoother engine operation, reduced noise, and potentially longer engine life that result from improved lubricity make these additives essential for modern diesel engines, particularly when using ultra-low sulfur diesel (ULSD) fuels that lack natural lubricating properties.

Compatibility With Engines

Enhance your engine's performance and longevity by considering the compatibility of diesel fuel additives with various engine types, including agricultural, construction, marine, and automotive engines.

When selecting a diesel fuel additive, ensure it's suitable for use with low-sulfur diesel fuels to maintain proper engine performance and emissions compliance. Look for additives that have been tested and proven to work effectively with turbocharged diesel engines, as this is crucial for maintaining optimal performance levels.

Additionally, make sure the additive is safe for use across a wide range of diesel vehicles, including RVs, semi-trucks, racing vehicles, and small engines. Opt for additives that provide comprehensive engine care solutions, such as lubricity protection, injector cleaning, corrosion inhibition, and fuel economy improvement.

Lubricity Additive Selection

When selecting diesel fuel additives to enhance lubricity, prioritize those containing proven lubricity enhancers like lubricants and anti-wear agents to safeguard fuel system components against wear and tear.

Opt for additives that comply with industry standards to ensure compatibility with modern diesel engines.

Look for products with cetane boosters, which not only enhance combustion but also contribute to improved lubrication properties.

Evaluate the concentration of lubricity agents in the additive to guarantee sufficient protection against friction and wear in the fuel system.

Frequently Asked Questions

Can These Diesel Fuel Additives Be Used in All Types of Diesel Engines, Including High-Performance or Older Models?

Yes, diesel fuel additives can typically be used in all types of diesel engines, including high-performance or older models. They are designed to improve lubricity, boost performance, and protect your engine, regardless of the vehicle's age or power.

Are There Any Compatibility Issues With Using Multiple Diesel Fuel Additives Together or in Conjunction With Other Engine Treatments?

Using multiple diesel fuel additives simultaneously or alongside other engine treatments may lead to compatibility issues. It's essential to carefully read product labels and manufacturer recommendations to ensure optimal performance and avoid any potential complications.

How Often Should These Fuel Additives Be Used for Optimal Performance and Engine Protection?

For optimal performance and engine protection, use diesel fuel additives regularly. Follow manufacturer recommendations for frequency. Consistent usage helps maintain lubricity, enhance fuel quality, and safeguard your engine. Keep your vehicle running smoothly with proper care.

Are There Any Specific Storage or Handling Instructions for These Diesel Fuel Additives to Ensure Their Effectiveness Over Time?

To keep your diesel fuel additives effective over time, store them in a cool, dry place away from direct sunlight and extreme temperatures. Make sure to tightly seal the containers after each use for maximum performance.

Do These Additives Have Any Impact on Emissions or Exhaust Systems, Such as DPF Filters or Catalytic Converters?

Using diesel fuel additives can affect emissions and exhaust systems like DPF filters or catalytic converters. These products can help maintain cleaner combustion, potentially reducing harmful emissions and prolonging the life of emission control components.


Overall, choosing the best diesel fuel additives for lubricity is crucial for boosting performance and protecting your engine. Consider factors such as compatibility with your engine, effectiveness in cleaning and lubricating, and value for money.

The 5 products mentioned in this article offer a range of options to suit your specific needs. Take the time to research and select the right diesel fuel additive to keep your engine running smoothly and efficiently.