10 Best diesel additives of 2025

Save up to 22% off

Best Choice

1

Opti-Lube
Opti-Lube XPD All Seasons Diesel Fuel Additive: 1 Gallon with Accessories (1 Hand Pump & 2 Empty 8oz Bottles) (1 Gallon XPD with Hand Pump and Regular 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.
9.8

Exceptional

Our Rating

9.7
worth the money

9.5
distance
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Based on millions of stores and reviews

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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

12% 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.
9.6

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 16 Ounce Squeeze Bottle (HSSEDT16ZS)
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

Stanadyne
Stanadyne Performance Formula Diesel Fuel Additive 4 Pack of 1/2 Gallon Jugs - Part # 38566
Main highlights

Key Features
Boosts horsepower, improves fuel economy by up to 9.6%, enhances cetane levels, and restores lubricity. Authorized by Stanadyne Dealer.

Ideal Use Cases
Perfect for diesel engines needing performance restoration, improved cold starting, noise reduction, and for those seeking better fuel efficiency.

Customer Reviews
Most praised for significantly improved engine performance and noticeable fuel consumption reduction, leading to cost savings.
9.3

Excellent

Our Rating
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
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.
9.1

Excellent

Our Rating
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6

Archoil
Archoil AR6500 Diesel Treatment (40.6 oz) - 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.
9.0

Excellent

Our Rating

9.5
worth the money

9.1
distance
7

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.
8.9

Very Good

Our Rating
8

Archoil
Archoil Diesel Fuel System Kit - AR6500 Diesel Treatment (40.6 oz) + AR6400-D Diesel Fuel System Cleaner

14% Off
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 LX4 Lubricity Extreme 1 Gallon Bottle

21% Off
8.7

Very Good

Our Rating
10

Stanadyne
Stanadyne Performance Formula Diesel Fuel Additive 2 Pack of 1/2 Gallon Jugs - Part # 38566

22% Off
Main highlights

Restores and Increases Horsepower
Enhances engine power and efficiency with improved combustion and reduced noise.

Ideal for Year-Round Use
Perfect for all seasons, ensuring consistent performance and fuel efficiency.

Highly Praised for Smoother Engine
Customers love the smoother idle and superior power in vehicles.
8.4

Good

Our Rating

9.3
worth the money

9.1
distance

10 Best diesel additives of 2025

1

Opti-Lube XPD All Seasons Diesel Fuel Additive: 1 Gallon with Accessories (1 Hand Pump & 2 Empty 8oz Bottles) (1 Gallon XPD with Hand Pump and Regular Accessory Bottles)

9.7

9.5

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 16 Ounce Squeeze Bottle (HSSEDT16ZS)

9.5

9.1

9.1

4

Stanadyne Performance Formula Diesel Fuel Additive 4 Pack of 1/2 Gallon Jugs - Part # 38566

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 AR6500 Diesel Treatment (40.6 oz) - Treats 400 Gallons - Additive for All Diesel Vehicles

9.5

9.1

7

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

8

Archoil Diesel Fuel System Kit - AR6500 Diesel Treatment (40.6 oz) + AR6400-D Diesel Fuel System Cleaner

9.7

9.5

9.1

9

Hot Shot's Secret LX4 Lubricity Extreme 1 Gallon Bottle

10

Stanadyne Performance Formula Diesel Fuel Additive 2 Pack of 1/2 Gallon Jugs - Part # 38566

9.3

9.1

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