Best Diesel Engine Cleaner Additive: Compare 10 Options

#1 · Best Overall

1. Archoil Diesel Fuel System Kit

• Size: 1 Count (Pack of 2)

Best for: Two-stage system care.

Why it ranks #1: Pairs a 12-ounce AR6400-D cleaner with 40-ounce AR6500 treatment; listed doses cover a deep-clean step and ongoing use across diesel engines.

A cleaner-and-maintainer sequence is the defining feature of the Archoil Diesel Fuel System Kit: AR6400-D comes first, followed by AR6500 for ongoing treatment. That order gives owners a clear workflow, while its stated compatibility with pre-emissions vehicles and modern high-pressure common-rail engines broadens its listed application.

AR6400-D is the deep-cleaning first step: the 12-ounce amount treats 30–40 gallons. AR6500 then supports continued maintenance at fill-ups, with the 40-ounce amount treating up to 400 gallons. That separation helps buyers distinguish an initial system-cleaning stage from ongoing treatment rather than using one product for both roles. Archoil lists the kit for diesel vehicles and equipment, including pre-emissions and modern HPCR engines, making it suitable across those stated engine types.

Skip it if you want one bottle for routine fill-ups without a separate cleaning stage; Archoil AR6500 Diesel Treatment is the single-product ongoing option.

Best suited to diesel owners who want a defined initial cleaning step followed by maintenance and whose engine falls within the listed compatibility. Its two-stage workflow is less direct than choosing a single ongoing treatment.

Listed on Amazon as: 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

#2 · Best One-Tank Cleaner

2. Chevron Techron D Concentrate

• Size: 20 Fl Oz (Pack of 1)

Best for: One-tank diesel cleanup.

Why it ranks #2: Designed as a one-tank cleanup, treats up to 35 gallons, and targets deposits throughout the fuel system, including internal injector deposits.

Chevron Techron D Concentrate is described as a one-tank cleanup treatment, with a stated capacity of up to 35 gallons. It targets deposits throughout the fuel system, including internal injector deposits, and its cetane-restoration claims connect treatment with combustion, cold starting, and engine responsiveness.

The 20-ounce concentrated liquid is listed for all types and sizes of diesel engines, and one treatment covers up to 35 gallons. Its deposit-cleanup claims span the fuel system and include internal injector deposits, giving buyers a defined cleanup use rather than an unspecified maintenance dose. Chevron also links restored cetane to improved combustion, reduced emissions, and easier cold starting, while regular recommended treatment is described as helping prevent injector sticking and failure. The stated treatment cycle is every 3,000 miles.

Skip it if you want a treatment added at every fill-up; Archoil AR6500 Diesel Treatment is explicitly intended for ongoing fill-up dosing.

A fit for diesel owners seeking a defined cleanup dose with stated coverage and interval, especially those addressing injector deposits or cold-start concerns. Follow the listed cycle rather than treating it as a fill-up additive.

Listed on Amazon as: Chevron Techron D Concentrate Diesel Fuel System Cleaner, 20 oz., Pack of 1

#3 · Best Large-Volume Cleaner

3. Hot Shot's Secret Diesel Extreme

• Weight: 7.7 lb
• Size: 128 Fl Oz (Pack of 1)

Best for: Bulk injector deposit cleaning.

Why it ranks #3: The one-gallon format is described as a concentrated injector cleaner that targets internal and external deposits and other fuel-system components.

A one-gallon container gives Hot Shot’s Secret Diesel Extreme a substantial supply for owners prioritizing fuel-system cleaning. Its stated targets include internal and external diesel injector deposits, varnish, and components such as valves, pumps, rings, pistons, and upper cylinders, supporting a broad cleaning and lubrication role.

Diesel Extreme is described as a concentrated fuel-injector cleaner that cleans, lubricates, and safeguards fuel-system and engine components. Its focus on internal and external injector deposits, along with varnish, makes it relevant to owners addressing buildup rather than only seeking a cetane boost. The one-gallon, 128-fluid-ounce container provides a large amount of product to store and handle; the supplied details do not state a gallons-treated ratio, so users cannot plan coverage from the listed capacity alone.

Skip it if you need a smaller bottle for occasional treatment; Liqui Moly Super Diesel Additive is supplied in a 300 ml container.

A fit for owners who want a large-format cleaner aimed at injector deposits and multiple fuel-system components. The gallon container suits buyers comfortable storing and handling bulk liquid, while its treatment ratio is not stated.

Listed on Amazon as: Hot Shot's Secret Diesel Extreme Fuel Additive, 1 Gallon

#4 · Best for Injector Deposits

4. Power Service Diesel Kleen

• Weight: 4 lb

Best for: HPCR injector cleaning.

Why it ranks #4: Targets internal and external injector deposits, helps prevent sticking in HPCR and older systems, and includes a lubricator for fuel-system components.

Power Service Diesel Kleen+Cetane Boost specifically targets dirty injectors in both high-pressure common-rail and older systems, making its stated cleaning scope a useful differentiator. It removes internal and external injector deposits, while Slickdiesel Lubricator is included to protect fuel pumps and injectors from wear associated with poor-quality ULSD.

The listed injector cleaning addresses both internal and external deposits and is intended to help prevent injector sticking, a practical fit for owners concerned with injector operation. Its stated compatibility includes HPCR and older systems, as well as ULSD, biodiesel, and biodiesel blends, so fuel type and system age do not limit the named applications. The Slickdiesel Lubricator adds a protective role for pumps and injectors, while the 64-ounce container offers a larger format for keeping on hand.

Skip it if you need a stated treatment capacity to plan dosing; Stanadyne Performance Formula 38566 specifies that its 64-ounce jug treats 240 gallons.

A suitable choice for owners focused on injector deposits and lubrication across HPCR or older diesel systems, including biodiesel use. The listed facts do not provide a treatment ratio, so it is less useful for capacity planning.

Listed on Amazon as: Power Service Diesel Kleen+Cetane Boost 64 oz, Pack of 1 3064-06 Grey

#5

5. Lucas Oil Diesel Deep Clean

• Weight: 249 g
• Size: 1 Count (Pack of 1)

Best for: Simple 16-ounce bottle.

Why it ranks #5: Its product name identifies a diesel deep-clean use and the listing specifies a 16-ounce bottle, though detailed cleaning directions are not provided.

Lucas Oil Diesel Deep Clean comes in a straightforward 16-ounce bottle, a compact format for buyers seeking a single-container diesel additive. The supplied product details identify its size and manufacturer but do not describe a treatment ratio or specific cleaning targets, so its fit is clearest for shoppers who already have product-specific guidance.

The listing identifies this as a 16-ounce Lucas Oil Diesel Deep Clean bottle, but provides no usage rate, gallons-treated figure, or specific fuel-system targets. That limits how precisely a buyer can plan dosing or compare its cleaning scope with products whose features name injector deposits, cetane effects, or system compatibility. The bottle format is easy to distinguish and store among vehicle supplies, but the available product facts do not establish a maintenance schedule or treatment workflow.

Skip it if you need stated injector targets and treatment coverage; Chevron Techron D Concentrate lists injector cleaning and treatment up to 35 gallons.

Consider it if you are specifically seeking the Lucas Oil 16-ounce Diesel Deep Clean bottle and have separate usage guidance. Buyers who need documented cleaning targets or coverage should choose a product with those details listed.

Listed on Amazon as: Lucas Oil 16 Oz. Diesel Deep Clean – 1 Each

#6

6. Stanadyne Diesel Performance Formula

• Size: 64oz

Best for: OEM-conscious all-season additive.

Why it ranks #6: This 64-ounce all-purpose formula includes detergent and cetane improver, and its listed treatment amount is 240 gallons of diesel fuel.

OEM approvals from GM, Ford, Deere, and Navistar distinguish Stanadyne Performance Formula for buyers who value manufacturer acceptance. The all-season, all-purpose additive is listed for on-road, off-road, and marine diesel engines, while its detergent and cetane improver support cleanliness and engine performance.

The 64-ounce jug is stated to treat 240 gallons, giving owners a clear coverage figure for planning use. Its detergent and cetane improver are described as helping restore fuel economy, horsepower, and torque, while the product also meets the Cummins L10 Superior Test for cleanliness. The broad all-season positioning and listed on-road, off-road, and marine compatibility make it applicable across those use cases. Shipping is restricted to ground transport within the continental United States, an important logistics boundary for ordering.

Skip it if you need air or international shipment; Chevron Techron D Concentrate is listed without this product’s stated ground-shipping restriction.

A strong fit for owners seeking an all-season additive with named OEM approvals and a stated 240-gallon treatment capacity. Its shipping restriction matters for buyers outside the continental United States or needing air transport.

Listed on Amazon as: Stanadyne Diesel Performance Formula 38566, 64 Ounce

#7

7. Liqui Moly Super Diesel Additive

• Weight: 6.4 oz

Best for: Cetane and fuel-system upkeep.

Why it ranks #7: The 300-milliliter additive is described as cleaning and maintaining the fuel system while increasing lubrication and cetane value.

Liqui Moly Super Diesel Additive combines fuel-system cleaning and maintenance with a cetane increase, connecting routine use to easier starting and improved engine performance. Its 300 ml size suits buyers looking for a smaller-format additive, while the description also identifies corrosion prevention and added lubrication for fuel-system components.

Regular use is described as keeping the fuel system in working order, and the additive’s cleaning function supports that maintenance role. The stated increase in cetane value is tied to easier starting and improved performance, while added lubrication is described as reducing fuel-pump and injector wear. Corrosion prevention adds another fuel-system protection claim. The 300 ml container is smaller than the large-format products in this roundup, which may suit buyers prioritizing a compact bottle over a bulk supply.

Skip it if you need a larger stated supply for ongoing treatment; Stanadyne Performance Formula 38566 is a 64-ounce jug listed to treat 240 gallons.

A fit for owners seeking a compact additive with cleaning, lubrication, corrosion-prevention, and cetane benefits. Consider the bottle size against your maintenance needs, since the supplied details do not state its treatment volume.

Listed on Amazon as: Liqui Moly Super Diesel Additive | 300 ml | Diesel additive | SKU: 2002

#8

8. Archoil AR6500 Diesel Treatment

• Weight: 2.94 lb

Best for: Measured fill-up maintenance.

Why it ranks #8: A 40-ounce treatment is intended for every fill-up and handles up to 400 gallons, but the listing focuses on ongoing care rather than a separate deep-clean step.

A long neck and measuring chamber make Archoil AR6500 unusually explicit about fill-up dosing, helping simplify a repeat treatment routine. The 40-ounce bottle treats up to 400 gallons, and its listed uses include injector cleaning, cetane boosting, deposit control, and improved lubricity across diesel vehicles and equipment.

For ongoing upkeep, AR6500 is added directly to the tank at each fill-up; the long neck and measuring chamber support controlled handling as part of that routine. One 40-ounce bottle treats up to 400 gallons, providing a stated capacity for planning repeated use. Archoil lists the product for light- and heavy-duty vehicles, pickups, SUVs, vans, RVs, equipment, and modern HPCR systems. Its lubricity improvement is stated as 43% under ASTM D6079, with injector cleaning and DPF and turbo deposit control also listed.

Skip it if you want an initial deep-clean stage before ongoing treatment; Archoil Diesel Fuel System Kit pairs AR6400-D with AR6500 in a two-step sequence.

Well suited to diesel owners who want a measured fill-up routine with a stated treatment capacity and broad listed vehicle compatibility. It is an ongoing treatment, not the separate first-stage cleaning approach found in Archoil’s kit.

Listed on Amazon as: Archoil AR6500 Diesel Treatment (40 oz) Treats 400 Gallons, Diesel Fuel Additive – Lubricity Improver, Injector Cleaner, DPF & Turbo Deposit Control, Cetane Booster

#9

9. Power Service Diesel Kleen 12 Ounce

• Weight: 8 lb

Best for: Multi-pack injector upkeep.

Why it ranks #9: It offers injector cleaning and cetane boost, but the listed pack contains nine 12-ounce bottles, a less direct fit for shoppers seeking one cleaner bottle.

Nine 12-ounce units give Power Service Diesel Kleen +Cetane Boost a multi-pack format for owners who prefer several smaller containers. The formula is listed to clean injector deposits, prevent sticking, boost cetane, and lubricate fuel-injection components across HPCR and older systems, including ULSD and biodiesel blends.

Each 12-ounce container offers a smaller unit to handle than a bulk jug, while the nine-pack supplies multiple units for continued maintenance. The listed cleaning removes internal and external injector deposits and helps prevent sticking in both HPCR and older systems. Cetane boosting is paired with lubricating protection for injection components, and the product is stated to work with ULSD, biodiesel, and biodiesel blends. The listing does not provide a gallons-treated figure, so the pack size alone cannot establish dosing frequency.

Skip it if you prefer one larger container with a stated coverage figure; Stanadyne Performance Formula 38566 is a 64-ounce jug listed for 240 gallons.

A practical fit for diesel owners who want several smaller containers and injector-cleaning benefits across the listed system and fuel types. Check the supplied dosing instructions before relying on pack count to plan treatment intervals.

Listed on Amazon as: Power Service Diesel Kleen +Cetane Boost – 12 Ounce (Pack of 9)

#10

10. Hot Shot's Secret Everyday Diesel Treatment

• Weight: 16 oz
• Size: 16 Fl Oz Squeeze

Best for: Routine fuel economy maintenance.

Why it ranks #10: This 16-ounce product focuses on routine treatment and cetane increase of up to seven points, rather than a dedicated intensive-cleaning use.

Cetane improvement of up to seven points gives Hot Shot’s Secret Everyday Diesel Treatment a clear role in regular fuel upkeep, with the listed benefits including improved fuel economy and performance. Its 16-ounce liquid bottle is a compact option for drivers seeking an ongoing treatment rather than a two-step cleaning kit.

The product is described for everyday treatment, so it fits a repeat-use maintenance routine. Its cetane boost of up to seven points is linked to better fuel economy, while the stated performance and engine-health benefits make it relevant to drivers aiming to maintain smooth, efficient operation. The 16-ounce squeeze bottle is a manageable size to keep with vehicle supplies; the supplied information does not specify a dose or gallons treated, so it cannot support a precise treatment schedule.

Skip it if you want a stated treatment ratio or a separate deep-clean step; Archoil AR6400-D plus AR6500 provides a two-step routine with listed treatment capacities.

A good fit for diesel owners seeking a regular-use additive with a stated cetane boost and fuel-economy benefit. Choose another option if you need a documented treatment volume or a dedicated first-stage system clean.

Listed on Amazon as: Hot Shot's Secret Everyday Diesel Treatment EDT, 16 oz