10 Best diesel additives of 2025

Save up to 26% off

Best Choice

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
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Value for Money

2

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

11% 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
- Injector Cleaning:Cleans dirty injectors
- Performance Enhancements:Engines run smoother
- Cetane Boost:Boosts cetane up to 6
- Fuel Economy:Effective in all diesel fuels
- Corrosion Protection:N/A
9.7

Exceptional

Our Rating

9.9
worth the money

9.7
quality of ingredients

9.7
distance
3

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)

26% 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.
9.6

Exceptional

Our Rating

9.5
Simple to use

9.3
Long life

9.1
worth the money
4

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
- Injector Cleaning:Cleans fuel system
- Performance Enhancements:Increases power and response
- Cetane Boost:Strong cetane boost
- Fuel Economy:Increases fuel economy MPG
- Corrosion Protection:Protects fuel system
9.5

Excellent

Our Rating

9.5
worth the money

9.1
distance
5

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

18% Off
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
- Injector Cleaning:Deeply cleans fuel system
- Performance Enhancements:Improves engine performance
- Cetane Boost:Increases cetane by 7 points
- Fuel Economy:Maximizes MPGs
- Corrosion Protection:Prevents rust and corrosion
9.3

Excellent

Our Rating
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6

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.
9.1

Excellent

Our Rating

9.7
Long life

9.5
distance

9.1
worth the money
7

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

17% Off
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.
9.0

Excellent

Our Rating
8

Opti-Lube
Opti-Lube XPD All-Season Diesel Fuel Additive - 1 Gallon with Accessories (Hand Pump and Standard Accessory Bottles)
Main highlights

Key Features and Benefits
Enhances fuel economy, cleans injectors, improves performance all year, and prevents rust. Comes with accessories for easy application.

Ideal Use Cases
Perfect for trucks, farm, and construction equipment needing increased fuel efficiency, engine cleanliness, and performance in any weather.

Customer Reviews Highlight
Most praised for significantly improving fuel efficiency and engine performance, with noticeable differences in truck operation.
8.9

Very Good

Our Rating

9.7
worth the money

9.5
distance
9

Archoil
Archoil AR6500 Diesel Treatment (10.1 oz) - Four Pack - Treats 400 Gallons - Additive for All Diesel Vehicles…

23% Off
Main highlights

Key Features and Benefits
Enhances diesel fuel performance with combustion modifier technology, cetane boost, and 100-gallon treatment per 10.1oz bottle.

Ideal Use Cases
Perfect for modern diesel engines, including HPCR systems, needing increased power, improved response, and comprehensive fuel system maintenance.

Customer Reviews Highlight
Users highly value its effectiveness in cleaning and lubricating fuel systems, noting noticeable improvements in engine performance and responsiveness.
Key specs
- Injector Cleaning:Cleans fuel system
- Performance Enhancements:Increases power and response
- Cetane Boost:Strong cetane boost
- Fuel Economy:N/A
- Corrosion Protection:Protects fuel system
8.6

Very Good

Our Rating

9.3
Simple to use

8.7
worth the money

8.4
distance
10

Hot Shot's Secret

Hot Shot's Secret LX4 Lubricity Extreme 1 Gallon, Fuel Treatment for All Engines, Gasoline & Diesel Additive, Fuel Additive Increases Lubricity, Protects & Extends Fuel System Life

21% Off
8.5

Good

Our Rating

10 Best diesel additives of 2025

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

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

3

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

4

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

9.5

9.1

5

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

6

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

9.7

9.5

9.1

7

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

8

Opti-Lube XPD All-Season Diesel Fuel Additive - 1 Gallon with Accessories (Hand Pump and Standard Accessory Bottles)

9.7

9.5

9

Archoil AR6500 Diesel Treatment (10.1 oz) - Four Pack - Treats 400 Gallons - Additive for All Diesel Vehicles…

9.3

8.7

8.4

10

Hot Shot's Secret LX4 Lubricity Extreme 1 Gallon, Fuel Treatment for All Engines, Gasoline & Diesel Additive, Fuel Additive Increases Lubricity, Protects & Extends Fuel System Life

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