10 Best diesel additives of 2026

Save up to 24% off

1

Stanadyne
Stanadyne Performance Formula Diesel Fuel Additive - 16 Oz. Case of 12
Main highlights

Improves Engine Performance and Longevity
Stanadyne Performance Formula enhances engine smoothness and prolongs injector life, ensuring optimal vehicle performance.

Ideal for Older Diesel Engines
Best used for maintaining performance in older diesel engines, especially those affected by ultra-low sulfur diesel fuel.

Restores Fuel Efficiency
Customers frequently praise its ability to improve fuel mileage and engine smoothness.
9.9

Exceptional

Our Rating

9.9
Simple to use

9.3
worth the money

9.3
distance
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Based on millions of stores and reviews

Shoppers influence our rankings
Analyzing top stores
2

Stanadyne
Stanadyne Performance Formula Diesel Fuel Additive - 16 Oz. Case of 12
Main highlights

Improves Engine Performance and Longevity
Stanadyne Performance Formula enhances engine smoothness and prolongs injector life, ensuring optimal vehicle performance.

Ideal for Older Diesel Engines
Best used for maintaining performance in older diesel engines, especially those affected by ultra-low sulfur diesel fuel.

Restores Fuel Efficiency
Customers frequently praise its ability to improve fuel mileage and engine smoothness.
9.8

Exceptional

Our Rating

9.9
Simple to use

9.3
worth the money

9.3
distance
3

Hot Shot's Secret
Hot Shot's Secret Everyday Diesel Treatment (HSSEDT16ZS) 6-in-1 Diesel Fuel Additive - Treats 400 Gallons, Diesel Injector Cleaner, Diesel Fuel System Cleaner, Diesel Additive Boosts Cetane, 16oz
Main highlights

Boosts Performance and Efficiency
Increases cetane up to 7 points, improving fuel economy and engine maintenance.

Ideal for Diesel Engines
Perfect for diesel engines needing protection from low sulfur fuel issues.

Quick Start Improvement
Most users notice faster engine starts and smoother running.
9.5

Excellent

Our Rating

9.5
Simple to use

9.1
worth the money

9.1
distance
4

Hot Shot's Secret
Hot Shot's Secret Everyday Diesel Treatment (HSSEDT16ZS) 6-in-1 Diesel Fuel Additive - Treats 400 Gallons, Diesel Injector Cleaner, Diesel Fuel System Cleaner, Diesel Additive Boosts Cetane, 16oz
Main highlights

Boosts Performance and Efficiency
Increases cetane up to 7 points, improving fuel economy and engine maintenance.

Ideal for Diesel Engines
Perfect for diesel engines needing protection from low sulfur fuel issues.

Quick Start Improvement
Most users notice faster engine starts and smoother running.
9.2

Excellent

Our Rating

9.5
Simple to use

9.1
worth the money

9.1
distance
5

Hot Shot's Secret
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 Start, Boosts Cetane, 16oz, Packaging May Vary
Main highlights

Prevents Gelling in Cold Weather
Minimizes wax crystal formation in diesel fuel, allowing it to travel through the fuel system even at temperatures 20 F below the wax solidification point.

Ideal for Cold Starts and Winter Use
Perfect for diesel engines operating in subzero temperatures, boosting cetane and protecting the fuel system to ensure smooth starts and optimal performance.

Highly Praised for Improved Lubricity
Customers frequently praise the product for enhancing diesel lubricity, which protects and cleans fuel injectors, leading to smoother engine performance and increased fuel economy.
Key specs
- Lubricity:Increases diesel lubricity
- Fuel Economy:Improves fuel combustion
- Injector Cleaning:Fuel injector cleaner
- Water Removal:Disperses moisture
- Performance Enhancements:Improves cold starts
9.1

Excellent

Our Rating
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6

Hot Shot's Secret
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 Start, Boosts Cetane, 16oz, Packaging May Vary
Main highlights

Prevents Gelling in Cold Weather
Minimizes wax crystal formation in diesel fuel, allowing it to travel through the fuel system even at temperatures 20 F below the wax solidification point.

Ideal for Cold Starts and Winter Use
Perfect for diesel engines operating in subzero temperatures, boosting cetane and protecting the fuel system to ensure smooth starts and optimal performance.

Highly Praised for Improved Lubricity
Customers frequently praise the product for enhancing diesel lubricity, which protects and cleans fuel injectors, leading to smoother engine performance and increased fuel economy.
Key specs
- Lubricity:Increases diesel lubricity
- Fuel Economy:Improves fuel combustion
- Injector Cleaning:Fuel injector cleaner
- Water Removal:Disperses moisture
- Performance Enhancements:Improves cold starts
9.0

Excellent

Our Rating
7

Hot Shot's Secret
Hot Shot's Secret Everyday Diesel Treatment 1 Gallon, 6-in-1 Diesel Additive - Injector Cleaner, Fuel System Cleaner, Fuel Additive Boosts Cetane (HSSEDT01G)

24% Off
Main highlights

Key Features
Boosts cetane up to 7 points, enhances fuel economy, adds lubricity, and prevents rust, offering a comprehensive every-tank maintenance solution.

Ideal Use Cases
Perfect for regular drivers and professionals seeking better fuel performance, engine protection, and maintenance in varying weather and storage conditions.

Customer Praise
Highly praised for significantly improving engine performance and fuel efficiency, with many noting a noticeable difference in vehicle operation.
8.9

Very Good

Our Rating

9.5
Simple to use

9.3
Long life

9.1
worth the money
8

Hot Shot's Secret
Hot Shot's Secret Everyday Diesel Treatment 1 Gallon, 6-in-1 Diesel Additive - Injector Cleaner, Fuel System Cleaner, Fuel Additive Boosts Cetane (HSSEDT01G)

24% Off
Main highlights

Key Features
Boosts cetane up to 7 points, enhances fuel economy, adds lubricity, and prevents rust, offering a comprehensive every-tank maintenance solution.

Ideal Use Cases
Perfect for regular drivers and professionals seeking better fuel performance, engine protection, and maintenance in varying weather and storage conditions.

Customer Praise
Highly praised for significantly improving engine performance and fuel efficiency, with many noting a noticeable difference in vehicle operation.
8.8

Very Good

Our Rating

9.5
Simple to use

9.3
Long life

9.1
worth the money
9

Power Service
Power Service 1025-12PK +Cetane Boost Diesel Fuel Supplement Anti-Freezer - 1 Quart, (Pack of 12)
Main highlights

Fuel Gelling Prevention
Prevents fuel gelling and protects against fuel-filter icing in extreme cold.

Ideal for Cold Climates
Perfect for diesel engines operating in sub-zero temperatures and harsh conditions.

Reliable Cold Start
Customers praise its effectiveness in ensuring reliable cold starts and preventing breakdowns.
8.7

Very Good

Our Rating

9.9
worth the money

9.9
Temperature control

9.5
For traveling
10

Power Service
Power Service Diesel Kleen+Cetane Boost 64 oz, Pack of 1 3064-06 Grey
Main highlights

Injector Cleaning and Protection
Cleans dirty injectors and prevents sticking, restoring power and efficiency.

Versatile Fuel Compatibility
Effective in all diesel fuels, including ULSD and biodiesel blends.

Lubrication and Wear Protection
Contains Slickdiesel Lubricator to protect fuel pumps and injectors.
8.6

Very Good

Our Rating

10 Best diesel additives of 2026

1

Stanadyne Performance Formula Diesel Fuel Additive - 16 Oz. Case of 12

9.9

9.3

9.3

How do we rank?

How do we rank?

Analyzing top stores

2

Stanadyne Performance Formula Diesel Fuel Additive - 16 Oz. Case of 12

9.9

9.3

9.3

3

Hot Shot's Secret Everyday Diesel Treatment (HSSEDT16ZS) 6-in-1 Diesel Fuel Additive - Treats 400 Gallons, Diesel Injector Cleaner, Diesel Fuel System Cleaner, Diesel Additive Boosts Cetane, 16oz

9.5

9.1

9.1

4

Hot Shot's Secret Everyday Diesel Treatment (HSSEDT16ZS) 6-in-1 Diesel Fuel Additive - Treats 400 Gallons, Diesel Injector Cleaner, Diesel Fuel System Cleaner, Diesel Additive Boosts Cetane, 16oz

9.5

9.1

9.1

5

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 Start, Boosts Cetane, 16oz, Packaging May Vary

6

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 Start, Boosts Cetane, 16oz, Packaging May Vary

7

Hot Shot's Secret Everyday Diesel Treatment 1 Gallon, 6-in-1 Diesel Additive - Injector Cleaner, Fuel System Cleaner, Fuel Additive Boosts Cetane (HSSEDT01G)

9.5

9.3

9.1

8

Hot Shot's Secret Everyday Diesel Treatment 1 Gallon, 6-in-1 Diesel Additive - Injector Cleaner, Fuel System Cleaner, Fuel Additive Boosts Cetane (HSSEDT01G)

9.5

9.3

9.1

9

Power Service 1025-12PK +Cetane Boost Diesel Fuel Supplement Anti-Freezer - 1 Quart, (Pack of 12)

9.9

9.9

9.5

10

Power Service Diesel Kleen+Cetane Boost 64 oz, Pack of 1 3064-06 Grey

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