A strong diesel engine cleaner additive helps target injector and fuel-system deposits while matching your vehicle, tank size, and maintenance routine. This roundup suits diesel car, truck, marine, and equipment owners comparing concentrated cleaners, ongoing treatments, and two-step kits. The listed products differ substantially: some focus on deep cleaning, others combine cleaning with cetane improvement or component lubrication, and one is also intended for gasoline engines.
Bottle size does not automatically indicate treatment strength, so check the stated coverage before choosing. Compatibility also matters for older systems, high-pressure common-rail engines, biodiesel blends, and emissions-related components.
The most practical choice is the formula whose documented use, capacity, and dosing schedule fit how you operate and maintain your diesel vehicle.
For a dedicated diesel cleaner, Archoil AR6400-D is a practical deep-clean option because its 12-ounce bottle treats 30–40 gallons and is intended for injector, turbo, and DPF deposit control. Power Service Diesel Kleen+Cetane Boost suits buyers who also want injector cleaning, cetane support, and lubricity for HPCR or older systems. For ongoing use, Hot Shot’s Secret Everyday Diesel Treatment or the Archoil two-step kit offers a maintenance-oriented approach.
Always match the stated dose and fuel compatibility to your application.
Diesel Engine Cleaner Additives: A Comparison
| Image | Product | Buy |
|---|---|---|
Best Pick 1  | Hot Shot's Secret Everyday Diesel Treatment EDT, 16 oz Best for: Everyday fuel treatment Brand: Hot Shot's Secret | Included Components: Bottle | View on Amazon |
Best Pick 2  | Hot Shot's Secret Diesel Extreme Fuel Additive, 64 oz Best for: Extreme fuel additive Brand: Hot Shot's Secret | Included Components: 2 QT bottle | View on Amazon |
Best Pick 3  | Power Service Diesel Kleen+Cetane Boost 64 oz, Pack of 1 3064-06 Grey Best for: Cetane boost and cleaning Brand: Power Service | Item Weight: 4 pounds | View on Amazon |
Best Pick 4  | Archoil AR6400-D Diesel Fuel System Cleaner (12 oz) Deep Clean – Injector Cleaner, Turbo & DPF Deposit Control Best for: Deep system cleaning Brand: Archoil | Additional Information: Important information | View on Amazon |
Best Pick 5  | Power Service Diesel Kleen +Cetane Boost – 12 Ounce (Pack of 9) Best for: Multi-pack cetane boost Brand: Power Service | Item Weight: 8 pounds | View on Amazon |
How We Compared These Products
We compared dimensions, capacity, materials, compatibility, included components, and care requirements across many Amazon listings. These details matter because the product must fit the available space, intended use, setup requirements, and maintenance routine. After examining the wider field, we selected 10 products from Hot Shot’s Secret, Power Service, Archoil, Sea Foam, Liqui Moly, Stanadyne, and Lucas Oil.
The shortlist includes products such as Hot Shot’s Secret Everyday Diesel Treatment EDT, Power Service Diesel Kleen+Cetane Boost 64 oz, and Archoil AR6400-D Diesel Fuel System Cleaner (12 oz) Deep Clean – Injector Cleaner. Every recommendation is tied to information stated for that specific product; unclear or missing features were treated as unknown rather than filled with assumptions.
Detailed Reviews: Best Diesel Engine Cleaner Additive
1. Hot Shot’s Secret Everyday Diesel Treatment EDT, 16 oz
Best for: Daily engine maintenance.
Hot Shot's Secret Everyday Diesel Treatment is formulated for daily use to maintain engine health and improve performance. It is designed to keep your diesel engine running smoothly and efficiently, providing peace of mind on the road.
This EDT boosts cetane levels by up to 7 points, directly contributing to better fuel economy and potentially reducing maintenance costs. Its liquid form and 16 oz volume make it easy to add to your fuel system for regular upkeep and enhanced vehicle performance.
Product Details
| Brand | Hot Shot's Secret |
|---|---|
| Included Components | Bottle |
| Item Form | Liquid |
| Item Volume | 473 ml |
| Item Weight | 16 ounces |
| Manufacturer | Lubrication Specialties, Inc |
| Model Number | HSSEDT16ZS |
Additional Product Information
| Size | 16 Fl Oz Squeeze |
|---|---|
| Warranty Description | 100% Money Back Guarantee |
| Additional Information | Important information |
Pros
- Improves performance
- Maintains engine health
- Boosts cetane levels
- Enhances fuel economy
Cons
- Only 16 oz per bottle
Ideal for daily drivers seeking consistent engine health and improved fuel efficiency. Ensure you have enough for regular application as it comes in a 16 oz size.
2. Hot Shot’s Secret Diesel Extreme Fuel Additive, 64 oz
Best for: Deep fuel system cleaning.
Hot Shot's Secret Diesel Extreme Fuel Additive offers a comprehensive solution for cleaning your diesel system. It effectively removes free water, stabilizes fuel, and boosts cetane levels for improved engine operation.
This 64 oz liquid additive is designed to clean out the tank, lines, and injectors, while also lubricating the fuel pump and injectors. Its ability to remove free water from the system and stabilize fuel ensures better overall fuel quality and protection for critical components.
Product Details
| Brand | Hot Shot's Secret |
|---|---|
| Included Components | 2 QT bottle |
| Item Form | Liquid |
| Item Volume | 1893 ml |
| Item Weight | 16 ounces |
| Manufacturer | Lubrication Specialties, Inc. |
| Model Number | P040464Z |
Additional Product Information
| Size | 64 Fl Oz (Pack of 1) |
|---|---|
| Special Features | Not_Performance_Used |
| Warranty Description | 100% Money Back Guarantee |
| Additional Information | Important information |
Pros
- Cleans tank, lines, and injectors
- Removes free water
- Stabilizes fuel
- Boosts cetane
Cons
- Item weight is 16 ounces despite 64 oz volume
Suitable for those needing a thorough diesel system clean and fuel stabilization. Consider the listed item weight for handling, though it contains 64 fl oz of liquid.
3. Power Service Diesel Kleen+Cetane Boost 64 oz, Pack of 1 3064-06 Grey
Best for: Injector cleaning and protection.
Power Service Diesel Kleen+Cetane Boost is engineered to clean dirty injectors and prevent sticking in various diesel systems. It effectively restores lost power and fuel economy through its advanced cleaning capabilities.
This 64 oz grey additive removes both internal and external deposits on fuel injectors, ensuring they function optimally. It contains Slickdiesel Lubricator to protect fuel pumps and injectors from wear, especially crucial with Ultra Low Sulfur Diesel (ULSD) fuels.
Product Details
| Brand | Power Service |
|---|---|
| Item Weight | 4 pounds |
| Item model number | 3064-06 |
| Manufacturer | Power Service |
| Part Number | 3064-06 |
| Model | 3064-06 |
| Dimensions | 3.4 x 6.75 x 10.3 inches |
Pros
- Cleans dirty injectors
- Prevents injector sticking
- Restores lost power
- Protects fuel pumps and injectors
Cons
- Contains chemicals known to cause cancer and reproductive harm in California
A good choice for diesel owners looking to restore injector performance and protect fuel system components. Be aware of California Proposition 65 warnings regarding its chemical composition.
4. Archoil AR6400-D Diesel Fuel System Cleaner (12 oz) Deep Clean – Injector Cleaner, Turbo & DPF Deposit Control
Best for: Rapid diesel system cleaning.
Archoil AR6400-D Diesel Fuel System Cleaner provides a rapid, deep clean for your diesel fuel system. This concentrated formula is designed to quickly address performance-robbing deposits and restore optimal fuel system function.
The 12 oz bottle treats 30-40 gallons of diesel and is easy to use by simply pouring into the fuel tank. It works to clean injectors fast, restoring their spray patterns for smoother running, improved response, and more efficient combustion, while also reducing DPF deposits.
Product Details
| Brand | Archoil |
|---|---|
| Additional Information | Important information |
Pros
- Rapid-acting deep clean
- Cleans injectors fast
- Restores spray patterns
- Controls DPF deposits
Cons
- Only 12 oz per bottle
Best for diesel owners needing a quick and effective fuel system deep clean, especially those concerned with injector performance and DPF health. Ensure your fuel tank capacity is within the 30-40 gallon treatment range.
5. Power Service Diesel Kleen +Cetane Boost – 12 Ounce (Pack of 9)
Best for: Multi-pack injector cleaner.
Power Service Diesel Kleen +Cetane Boost in a 12-ounce pack of 9 offers a comprehensive solution for injector cleaning and performance improvement. It cleans injectors, boosts cetane, and lubricates fuel injection components.
This formula cleans both internal and external injector deposits, restoring lost power and fuel economy. The included Slickdiesel Lubricator provides protection against wear caused by poor quality Ultra Low Sulfur Diesel (ULSD) fuel, making it effective in all diesel fuels, including blends.
Product Details
| Brand | Power Service |
|---|---|
| Item Weight | 8 pounds |
| Item model number | 3012-09 |
| Manufacturer | Power Service |
| Part Number | 3012-09 |
| Model | 3012-09 |
| Package Dimensions | 10.6 x 10.2 x 9 inches |
Pros
- Cleans injectors
- Boosts cetane
- Lubricates fuel injection components
- Effective in all diesel fuels
Cons
- Pack of 9, 12 oz bottles may be excessive for some users
Ideal for users who frequently use this product and prefer a bulk pack for convenience. Consider if the 9-pack quantity aligns with your usage frequency and storage space.
6. Sea Foam Motor Treatment | Fuel System Cleaner, Fuel Stabilizer & Oil Treatment | Gas & Diesel Additive for Cars & Trucks | 16 oz, Pack of 3
Best for: All-in-one fuel and oil treatment.
Sea Foam Motor Treatment is a versatile additive for both gas and diesel engines, acting as a fuel system cleaner, fuel stabilizer, and oil treatment. It helps restore lost power and smooth out rough idling.
This 16 oz liquid formula cleans the entire fuel system, including fuel injectors and carburetor restrictions, for cleaner combustion. It also functions as a fuel stabilizer and can be used in the crankcase as an oil treatment to clean internal engine areas.
Product Details
| Brand | Sea Foam |
|---|---|
| Item Weight | 1 pounds |
| Item model number | Sea Foam – 18812000019 – 3pk |
| Manufacturer | Sea Foam Store |
| Part Number | Sea Foam – 18812000019 – 3pk |
| Model | Sea Foam – 18812000019 – 3pk |
| Package Dimensions | 8.03 x 7.87 x 2.64 inches |
Pros
- Cleans fuel system
- Stabilizes fuel
- Treats oil
- Smoothes rough idle
Cons
- Risk of explosive burst if added to lit or burning devices
Suitable for vehicle owners seeking a multi-purpose cleaner and stabilizer for both fuel and oil systems. Avoid using with any lit or burning devices due to explosion risk.
7. Archoil Diesel Fuel System Kit – AR6400-D (12 oz) + AR6500 (40 oz) – Complete Restoration For All Diesel Engines, Injector Cleaner, Lubricity Improver, DPF & Turbo Deposit Control, Cetane Booster
Best for: Complete diesel system restoration kit.
The Archoil Diesel Fuel System Kit provides a two-step approach to fuel system health, combining a deep cleaner with an ongoing maintenance treatment. It's designed for complete restoration and protection of all diesel engines.
This kit includes AR6400-D for a deep clean (12 oz treats 30-40 gallons) and AR6500 for continuous protection (40 oz treats up to 400 gallons). It's suitable for all diesel vehicles, including modern HPCR systems, cleaning injectors and restoring engine response.
Product Details
| Brand | Archoil |
|---|---|
| Capacity | 40 fluid ounces |
| Item Volume | 976 ml |
| Manufacturer | Archoil |
| Size | 1 Count (Pack of 2) |
| Additional Information | Important information |
Pros
- Two-step cleaning and maintenance
- Restores engine response
- Suitable for all diesel engines
- Deep clean and ongoing protection
Cons
- Requires two separate products for full benefit
Excellent for diesel owners committed to a comprehensive fuel system overhaul and long-term maintenance. Ensure you have the capacity for both the initial deep clean and subsequent regular treatments.
8. LIQUI MOLY Engine System Cleaner Diesel 300 ml Diesel Additive Item No. 5128
Best for: Diesel injection system cleaner.
LIQUI MOLY Engine System Cleaner Diesel is formulated to remove deposits throughout the entire fuel system and prevent their reformation. It is suitable for all diesel engines, including common rail and pump nozzle systems.
This 300 ml additive removes deposits and protects injection system components from wear. It ensures optimal combustion by preventing the burning and resinising of nozzle needles, contributing to the overall health and efficiency of the diesel engine.
Product Details
| Brand | Liqui Moly |
|---|---|
| Included Components | LIQUI MOLY 5128 Cleaner Diesel Injection System Can 300 ml |
| Item Weight | 0.25 kg |
| Manufacturer | Liqui Moly |
| Part Number | 5128 |
| Manufacturer Warranty Description | 2 Year |
| Model Number | 5128 |
Additional Product Information
| Size | 300 ml (1er Pack) |
|---|---|
| Additional Information | Important information Ingredients LIQUI MOLY Diesel engine system cleaner, 300 ml, diesel additive, item number: 5128 |
Pros
- Removes deposits
- Prevents deposit formation
- Protects injection system
- Ensures optimal combustion
Cons
- Only 300 ml per can
Recommended for diesel engine owners needing to address fuel system deposits and protect injection components. Consider the 300 ml size for targeted treatments or smaller engines.
9. Stanadyne Diesel Performance Formula 38566, 64 Ounce
Best for: Premium all-season diesel additive.
Stanadyne Diesel Performance Formula is a premium, all-season additive designed to address a wide range of diesel fuel-related problems. It is approved by many OEMs and proven in independent testing.
This 64 oz formula contains detergents and a cetane improver to restore fuel economy, increase horsepower, and torque. Meeting the Cummins L10 Superior Test for cleanliness, it's made by a fuel injection equipment manufacturer, ensuring robust performance.
Product Details
| Brand | Stanadyne |
|---|---|
| Compatible with Vehicle Type | All Diesel Engines: On Road – Off Road – Marine |
| Container Type | Can, Jug |
| Manufacturer | Stanadyne |
| Part Number | 38566 |
| Model Number | 5 |
| Size | 64oz |
Additional Product Information
| Additional Information | Important information |
|---|
Pros
- Restores fuel economy
- Increases horsepower and torque
- Meets Cummins L10 cleanliness test
- OEM approved
Cons
- Cannot be shipped by air
A top choice for diesel owners seeking a high-performance, all-season additive to boost power and efficiency. Be aware of shipping restrictions, as it cannot be sent via air transport.
10. Lucas Oil 16 Oz. Diesel Deep Clean – 1 Each
Best for: Diesel deep clean additive.
Lucas Oil Diesel Deep Clean is formulated to protect engine parts, keep vehicles running longer, and increase fuel efficiency and power. It is made in the United States and track-tested for performance.
This 16 oz additive is designed to clean diesel fuel systems, helping to improve overall engine performance. Lucas Oil products are recognized for their high performance and are trusted by mechanics for their effectiveness in maintaining vehicle longevity and efficiency.
Product Details
| Brand | Lucas Oil |
|---|---|
| Container Type | Bottle |
| Included Components | 1x 16 ounce bottle |
| Item Weight | 249 g |
| Manufacturer | Lucas Oil |
| Model Number | 10872 |
| Size | 1 Count (Pack of 1) |
Additional Product Information
| Additional Information | Important information |
|---|
Pros
- Protects engine parts
- Increases fuel efficiency
- Increases power
- Track tested and street approved
Cons
- Contains chemicals known to cause cancer and reproductive harm in California
Suitable for diesel owners looking for a performance-enhancing additive that also contributes to engine longevity. Note the California Proposition 65 warning regarding its chemical composition.
What Buyers Often Overlook
Sizing and dosing: compare treatment coverage, not bottle volume
Treatment coverage is the clearest way to compare these additives because container size alone does not show how much fuel a product handles. Archoil AR6400-D uses 12 ounces for 30–40 gallons, while its kit pairs that cleaner with a 40-ounce treatment that covers up to 400 gallons. Stanadyne’s 64-ounce jug is stated to treat 240 gallons, making its dosing information especially useful for owners managing larger fuel volumes.
Other listings provide bottle sizes but do not state a comparable coverage figure in the supplied details, including the 300 ml Liqui Moly cleaner and 16-ounce Hot Shot’s Secret Everyday Diesel Treatment. A multi-pack, such as the three 16-ounce Sea Foam bottles or nine 12-ounce Power Service bottles, may suit repeated maintenance, but the correct interval and amount still depend on the product directions.
Choose by documented gallons treated and intended frequency.
The Key Product Trade-Off
Compatibility and function: cleaner-only formulas versus broader fuel treatment
The main trade-off is whether you need deposit cleaning alone or a broader fuel-treatment role. Liqui Moly is specified for all diesel engines, including common-rail and pump-nozzle systems, and focuses on deposits throughout the fuel system and injection-system protection. Power Service lists compatibility with HPCR and older systems, plus ULSD, biodiesel, and biodiesel blends; it also combines injector cleaning with cetane support and lubricity.
Sea Foam is the broadest fuel-type option in this list because it is described for gasoline, diesel, diesel blends, and gas-ethanol, but its stated use is every 3,000 miles. Archoil’s kit is designed for all diesel vehicles and equipment, including pre-emissions and modern high-pressure common-rail engines, and separates deep cleaning from ongoing treatment.
Match the formula to the documented system and fuel type rather than assuming every additive is interchangeable.
Best Diesel Engine Cleaner Additive: Buyer's Guide
Fit, Dimensions, and Compatibility
Compare the listed dimensions with the intended counter, cabinet, appliance, storage, or installation space. Confirm model compatibility and connection requirements where they are supplied. A useful feature cannot compensate for a product that does not physically fit or work with the buyer’s existing setup.
Capacity, Output, and Operating Format
Match listed capacity, volume, output, and operating mode to the actual household or work routine. Larger figures can support heavier use, while a smaller format may be easier to place and maintain. Treat daily output, immediate storage, and container capacity as separate specifications when the listing distinguishes them.
Materials, Construction, and Care
Use the listed materials and care instructions to judge cleaning effort, storage conditions, and compatibility with the intended use. Dishwasher, freezer, food-contact, or weather-related claims are included only when supplied for that product. Check whether routine care fits the way the product will be used.
Included Components and Setup Needs
Review the included components before planning installation or first use. Hoses, adapters, lids, paddles, bowls, brushes, controls, and manuals vary by listing. Confirm power, water, assembly, or accessory requirements from the supplied product information rather than assuming that separately pictured parts are included.
Which Should You Choose?
Choose Archoil AR6400-D when a concentrated, occasional deep-clean format and stated 30–40-gallon coverage are the priority. Select the Archoil diesel fuel system kit when you want a two-step process: an initial cleaner followed by ongoing treatment. Power Service Diesel Kleen+Cetane Boost fits owners seeking injector cleaning alongside cetane support and lubricity, including HPCR, older systems, and biodiesel applications.
Stanadyne suits users who value a documented 240-gallon treatment volume in a 64-ounce jug and compatibility with on-road, off-road, or marine diesel engines. Hot Shot’s Secret Everyday Diesel Treatment is oriented toward regular maintenance, while Sea Foam is the flexible choice for households using both gasoline and diesel.
Consider Liqui Moly for broad diesel-system and injection-system coverage, and verify directions before use.
Quick Buying Checklist
- Confirm the complete dimensions against the available space.
- Verify model, accessory, connection, and appliance compatibility.
- Match capacity or output to the expected amount of use.
- Compare materials and care instructions with the maintenance routine.
- Check the included components before planning setup or first use.
- Confirm listed power, water, storage, or installation requirements where applicable.
Frequently Asked Questions
How often should I use diesel engine cleaner?
For regular maintenance, use an everyday diesel treatment with each fuel fill-up. For deeper cleaning or to address specific issues like clogged injectors, a more potent additive might be used less frequently, perhaps every few thousand miles or as recommended by the product.
Can diesel additives improve fuel economy?
Yes, many diesel additives are formulated to clean fuel injectors and combustion chambers. By ensuring a more efficient burn, they can help restore lost fuel economy and potentially improve it over time, especially in older or neglected engines.
What are the benefits of cetane boost?
Cetane boost improves the ignition quality of diesel fuel. Higher cetane numbers lead to a smoother, more complete combustion, reducing engine knocking and improving cold-start performance. This can also contribute to reduced emissions and a quieter engine operation.
Are diesel fuel system cleaners safe for my engine?
Generally, yes. Reputable diesel fuel system cleaners are designed to be safe for all diesel engine components when used as directed. They work by dissolving deposits without harming seals, gaskets, or metal parts within the fuel system.
Can I mix different diesel additives?
It’s generally not recommended to mix different diesel additives without consulting the manufacturers. While some might be compatible, others could react negatively, potentially reducing their effectiveness or causing unintended consequences for your engine’s fuel system.
Final Words
Choosing the right diesel engine cleaner additive depends on your specific needs, from daily maintenance to deep cleaning and performance enhancement. For consistent engine health and optimal fuel efficiency, regular use of a quality additive is a wise investment. Consider your engine’s condition and desired outcomes when making your selection.