10 Best diesel additives of 2025

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1

Power Service
Power Service Diesel Kleen + Cetane Boost 64oz Bottle (6 Pack) - Universal Fit, Boosts Cetane Up to 6 Numbers, Cleans Injectors, 10.17536 Liters

10% Off
Main highlights

Cleans and Boosts Performance
Cleans dirty injectors and boosts cetane for smoother engine operation.

Ideal for Diesel Engines
Perfect for all diesel fuels, including biodiesel blends.

Highly Praised Injector Cleaner
Customers love its effectiveness in maintaining injector cleanliness.
Key specs
- Fuel Economy:Effective in all diesel fuels
- Performance Enhancements:Engines run smoother
- Cetane Boost:Boosts cetane up to 6
- Injector Cleaning:Cleans dirty injectors
- Lubricity:N/A
9.8

Exceptional

Our Rating

9.9
worth the money

9.7
quality of ingredients

9.7
distance
How do we rank?

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Based on millions of stores and reviews

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Value for Money

2

Archoil

Archoil AR6500 Diesel Treatment (40 oz) Two Pack - Treats 800 Gallons - Additive for All Diesel Vehicles
9.7

Exceptional

Our Rating
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

12% Off
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.
9.4

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 1 Gallon, 6-in-1 Diesel Additive - Injector Cleaner, Fuel System Cleaner, Fuel Additive Boosts Cetane (HSSEDT01G)

25% 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.
9.3

Excellent

Our Rating

9.5
Simple to use

9.3
Long life

9.1
worth the money
5

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.
9.2

Excellent

Our Rating
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6

Stanadyne
Stanadyne Diesel Performance Formula 38566, 64 Ounce
Main highlights

Restores and Increases Horsepower
Made in the U.S.A., this formula enhances engine power.

Ideal for Diesel Engine Maintenance
Perfect for regular use in diesel trucks to maintain performance.

Highly Recommended for Engine Reliability
Customers praise its ability to prevent injector issues.
Key specs
- Fuel Economy:4% improvement
- Performance Enhancements:Restores horsepower
- Cetane Boost:Improves combustion
- Injector Cleaning:N/A
- Lubricity:Restores lubricity
9.1

Excellent

Our Rating

9.3
worth the money

9.1
distance
7

Archoil
Archoil AR6500 Diesel Treatment (40 Ounces) - Treats 400 Gallons - Additive for All Diesel Vehicles
Main highlights

Powerful Combustion Modifier
Incorporates Archoil's proven technology for increased power and response.

Ideal for All Diesel Engines
Perfect for diesel vehicles requiring enhanced fuel performance and protection.

Praised Fuel Efficiency Boost
Customers report noticeable improvements in fuel mileage and engine smoothness.
Key specs
- Fuel Economy:Increases fuel economy MPG
- Performance Enhancements:Increases power and response
- Cetane Boost:Strong cetane boost
- Injector Cleaning:Cleans fuel system
- Lubricity:Lubricates fuel system
9.0

Excellent

Our Rating

9.5
worth the money

9.1
distance
8

Archoil
Archoil Diesel Fuel System Kit - AR6500 Diesel Treatment (40 oz) + AR6400-D Diesel Fuel System Cleaner
Main highlights

Fuel System Restoration
Restores key fuel system components like injectors, turbo & DPF.

Best for Diesel Engines
Ideal for improving performance and MPG in diesel engines.

Praised for Fuel Economy
Customers praise its ability to boost fuel mileage significantly.
8.8

Very Good

Our Rating

9.7
Long life

9.5
distance

9.1
worth the money
9

Hot Shot's Secret
Hot Shot's Secret Diesel Extreme 1 Gallon, Concentrated Fuel System Cleaner, Diesel Fuel Additive, Injector Cleaner - Increases MPG & Restores Engine Performance
Main highlights

Deep Fuel System Cleaning
Deeply cleans any diesel engine's fuel system, including injectors, cylinders, fuel lines, and tank, lasting up to 6,000 miles.

Ideal for Diesel Engines
Best used for improving engine performance, fuel economy, and reducing DPF regens in various diesel vehicles including Mercedes Benz, BMW, RAM, and trucks.

Praised for Smoother Idle
Customers consistently praise the product for restoring a smooth idle and noticeable improvements in engine performance and fuel mileage.
Key specs
- Fuel Economy:Maximizes MPGs
- Performance Enhancements:Improves engine performance
- Cetane Boost:Increases cetane by 7 points
- Injector Cleaning:Deeply cleans fuel system
- Lubricity:N/A
8.6

Very Good

Our Rating
10

Power Service
Power Service Diesel Kleen +Cetane Boost - 12 Ounce (Pack of 9)
Main highlights

Injector Cleaning and Protection
Cleans dirty injectors and prevents sticking in HPCR and older systems.

Versatile Diesel Use
Effective in all diesel fuels, including ULSD and biodiesel blends.

Consistent Performance Boost
Users report noticeable mileage improvement and engine performance.
8.5

Good

Our Rating

10 Best diesel additives of 2025

1

Power Service Diesel Kleen + Cetane Boost 64oz Bottle (6 Pack) - Universal Fit, Boosts Cetane Up to 6 Numbers, Cleans Injectors, 10.17536 Liters

9.9

9.7

9.7

How do we rank?

How do we rank?

Analyzing top stores

2

Archoil AR6500 Diesel Treatment (40 oz) Two Pack - Treats 800 Gallons - Additive for All Diesel Vehicles

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 1 Gallon, 6-in-1 Diesel Additive - Injector Cleaner, Fuel System Cleaner, Fuel Additive Boosts Cetane (HSSEDT01G)

9.5

9.3

9.1

5

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

6

Stanadyne Diesel Performance Formula 38566, 64 Ounce

9.3

9.1

7

Archoil AR6500 Diesel Treatment (40 Ounces) - Treats 400 Gallons - Additive for All Diesel Vehicles

9.5

9.1

8

Archoil Diesel Fuel System Kit - AR6500 Diesel Treatment (40 oz) + AR6400-D Diesel Fuel System Cleaner

9.7

9.5

9.1

9

Hot Shot's Secret Diesel Extreme 1 Gallon, Concentrated Fuel System Cleaner, Diesel Fuel Additive, Injector Cleaner - Increases MPG & Restores Engine Performance

10

Power Service Diesel Kleen +Cetane Boost - 12 Ounce (Pack of 9)

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