Best Injector Cleaner For Duramax: Diesel Cleaners Compared

#1 · Best Overall

1. Archoil Diesel Fuel System Kit

• Size: 1 Count (Pack of 2)

Best for: Two-step diesel reset.

Why it ranks #1: The two-step kit pairs a deep-clean product dosed for 30–40 gallons with ongoing treatment, and is listed for modern high-pressure common-rail engines.

A two-stage kit pairs AR6400-D for an initial fuel-system clean with AR6500 for treatment at every fill-up. That sequence gives Duramax owners a clear transition from a concentrated cleanup to ongoing maintenance, and its stated compatibility includes modern high-pressure common-rail diesel systems.

The 12-ounce AR6400-D treats 30–40 gallons, making it the first step for a tank-scale clean. Afterward, the 40-ounce AR6500 treats up to 400 gallons and is intended for repeated use at fill-ups, so the kit covers both initial treatment and ongoing dosing. Archoil lists compatibility with all diesel vehicles, including modern HPCR engines; that broad stated fit suits owners seeking a single two-product routine rather than a cleaner alone.

Skip it if you want one bottle for routine dosing; Archoil AR6500 Diesel Treatment is the maintenance-only option in this lineup.

Duramax owners wanting an initial clean followed by repeat fuel treatment can use this two-step kit across the stated diesel applications. It requires keeping the AR6400-D first-step and AR6500 fill-up schedule distinct.

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 · Most Complete Kit

2. Archoil Ultimate Diesel Kit

• Weight: 5.24 lb

Best for: Three-step diesel protection.

Why it ranks #2: It includes AR6400-D cleaner and AR6500 fuel treatment, plus AR9100 friction modifier for engine oil, creating a three-step package.

Archoil’s three-product kit pairs AR6400-D cleaner and AR6500 fuel treatment with AR9100 friction modifier for engine oil. This sequence covers an initial fuel-system clean, repeated tank treatment, and an oil-change step, giving Duramax owners a broader maintenance routine than a fuel additive alone.

Use AR6400-D first, then add AR6500 at each fill-up; the product details say both are added directly to the fuel tank. At the next oil change, AR9100 goes into engine oil without tools, separating the fuel-treatment workflow from the lubrication step. The kit is listed for diesel engines, and its three-part sequence suits owners who want to coordinate fuel cleaning, ongoing treatment, and an oil treatment within one package.

Skip it if you want only fuel-system maintenance without an oil additive; Archoil Diesel Fuel System Kit includes AR6400-D and AR6500 alone.

Duramax owners wanting both fuel-system treatment and an oil-change additive can use this staged kit. Its added AR9100 step is relevant only if you also want an engine-oil treatment in the maintenance plan.

Listed on Amazon as: Archoil Ultimate Diesel Kit – AR9100 Friction Modifier (16oz) + AR6500 Diesel Treatment (40oz) + AR6400-D Diesel Fuel System Cleaner (12oz)

#3 · Service-Style Flush

3. Hot Shot's Secret Diesel Injector Flush

• Size: 32 Fl Oz (Pack of 1)

Best for: Service-focused injector flush.

Why it ranks #3: This 32-ounce diesel-specific product is described as a professional-grade injector flush targeting internal deposits and nozzle coking.

Hot Shot’s Secret Diesel Injector Flush targets internal diesel injector deposits and nozzle coking, with the stated aim of restoring injector balance rates. Its 32-ounce bottle is positioned for service professionals addressing issues such as rough idle, hard starting, and misfires.

The concentrated formula is described as cleaning internal diesel injector deposits and nozzle coking, which the listing associates with rough idle, hard starts, poor fuel economy, and increased DPF regenerations. It also states that the flush helps address common trouble codes related to injection timing and contributes to restoring injector balance rates. That symptom-focused positioning makes it distinct from a routine fill-up additive, though the supplied details do not describe a consumer dosing procedure.

Skip it if you want a fill-up additive with a stated routine method; Archoil AR6500 Diesel Treatment is added directly at each fill-up.

This suits service professionals or diesel owners focused on injector deposits, coking, and related symptoms. Duramax shoppers seeking straightforward tank maintenance should account for the listing’s service-oriented positioning and unspecified dosing procedure.

Listed on Amazon as: Hot Shot's Secret Diesel Injector Flush, 32 oz

#4 · Best Ongoing Treatment

4. Archoil AR6500 Diesel Treatment

• Weight: 2.94 lb

Best for: Fill-up maintenance dosing.

Why it ranks #4: The 40-ounce bottle treats up to 400 gallons and is listed for all diesel engines, including modern high-pressure common-rail systems.

A long neck and measuring chamber make Archoil AR6500 straightforward to dose directly into the tank at each fill-up. Its 40-ounce bottle treats up to 400 gallons, giving Duramax owners a repeated-use treatment with stated compatibility for modern HPCR diesel systems.

The measuring chamber supports repeatable dosing at fill-ups, while the 40-ounce capacity is listed to cover up to 400 gallons in total. Archoil also reports a 43% lubricity improvement under ASTM D6079 testing, a feature aimed at helping protect fuel-system components, including wear-sensitive parts. Its stated use spans light- and heavy-duty diesel vehicles and equipment, including pickups and modern HPCR systems, making the application relevant to a broad range of diesel owners.

Skip it if you want an initial deep-clean product bundled with maintenance dosing; Archoil Diesel Fuel System Kit adds AR6400-D before AR6500.

This suits Duramax owners seeking a measured additive for repeated fill-up use, with listed HPCR compatibility and lubricity data. It is the maintenance step, so choose a separate cleaner if initial deep cleaning is your priority.

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

#5

5. Hot Shot's Secret Diesel Extreme

• Weight: 0.45 kg
• Size: 16 Fl Oz (Pack of 1)

Best for: Deposit-and-water cleanup.

Why it ranks #5: This 16-ounce diesel fuel-system cleaner is described as addressing deposits, water and sludge while improving cetane.

Hot Shot’s Secret Diesel Extreme targets deposits, water, and sludge throughout the fuel system while also improving cetane. That combination gives diesel owners one fuel additive focused on cleanup and combustion quality, with the listed 16-ounce bottle providing a single-container treatment format.

The product is described as working through the entire fuel system to remove harmful deposits, water, and sludge, so it addresses several types of fuel-system contamination in one treatment. Its cetane-improving formula is linked in the listing to smoother, more efficient combustion, while stated outcomes include easier starts and stronger acceleration. The 16-ounce bottle is a straightforward single-bottle option, though the supplied information does not specify a treatment volume per bottle.

Skip it if you need a stated gallon dose or a maintenance schedule; Archoil AR6500 Diesel Treatment specifies treatment for up to 400 gallons.

Choose Diesel Extreme if your priority is a single additive addressing deposits, water, sludge, and cetane. Duramax owners who need a clearly stated tank dose should weigh that missing rate before selecting it.

Listed on Amazon as: Hot Shot's Secret Diesel Extreme, 16 oz, Fuel System Cleaner

#6

6. Liqui Moly Diesel Purge

• Size: 16.9 Fl Oz (Pack of 2)

Best for: Two-bottle purge cleaner.

Why it ranks #6: Its title identifies it as a diesel injection cleaner, but the supplied listing gives little application or dosing guidance beyond the 16.9-ounce two-bottle set.

Liqui-Moly Diesel Purge is supplied as a two-set listing of 500-milliliter injection cleaner, giving diesel owners a pair of liquid cleaner containers. The supplied details identify it specifically as an injection cleaner, but provide little additional information about treatment procedure or compatibility.

The listing identifies Diesel Purge as an injection cleaner and gives a 500-milliliter description alongside a pack-of-two size, so buyers can distinguish it from routine fuel treatments or a bundled maintenance kit. Its diesel-specific name makes it relevant to diesel injection cleaning, but the supplied feature information does not establish a dose, application method, or engine-system compatibility. Duramax owners should therefore base their choice on the product’s stated cleaner category rather than assume a particular procedure.

Skip it if you need a stated dosage or application process; Archoil AR6500 Diesel Treatment lists a fill-up method and total treatment capacity.

This is a compactly described option for shoppers seeking a diesel injection cleaner in a two-pack listing. Duramax owners who need a defined dose or service procedure should consider the sparse supplied application details before choosing.

Listed on Amazon as: Liqui-Moly Diesel Purge Injection Cleaner (500 ml 16.9 oz set of 2

#7

7. Lucas Oil Fuel Treatment

• Weight: 898 g
• Size: 32 Fluid oz

Best for: Multi-fuel system treatment.

Why it ranks #7: The 32-ounce treatment is listed for gasoline and diesel and says it cleans and lubricates fuel systems, including injectors.

Lucas Oil 10003 is listed for both gasoline and diesel and combines fuel-system cleaning with lubrication. Its one-quart bottle gives owners a larger-format treatment for injectors, carburetors, and combustion chambers, with additional stated aims of improving fuel flow and acceleration.

Lucas says the treatment cleans and lubricates the fuel system, including injectors, carburetors, and combustion chambers, while neutralizing sulfur and other harmful contaminants. The listing links reduced deposit buildup and improved fuel flow to increased power and acceleration, and also states that it treats gasoline as well as diesel. That broad application makes it a versatile maintenance choice, though the supplied information gives no specific dose per gallon for planning use in a Duramax tank.

Skip it if you require a listed gallon capacity before dosing; Archoil AR6500 Diesel Treatment states that 40 ounces treats up to 400 gallons.

Choose Lucas 10003 if you want a multi-fuel treatment that lists cleaning, lubrication, and contaminant neutralization in a quart bottle. Duramax owners needing precise tank-dose guidance should account for the unspecified rate.

Listed on Amazon as: Lucas Oil 10003 Fuel Treatment – 1 Quart

#8

8. ATS Chemical 505 CRF Treatment

• Weight: 15.8 oz

Best for: Port-and-direct-injector deposits.

Why it ranks #8: This 16-ounce product treats gasoline or diesel and claims to remove carbon deposits on port-style and direct-style injectors.

ATS Chemical 505 CRF targets carbon deposits on both port-style and direct-style injectors, a specific cleaning focus shared across its gasoline and diesel applications. The 16-ounce treatment is listed for 5–20 gallons, giving Duramax owners a defined fuel-volume range for maintenance planning.

The formula is described as removing deposits from port and direct injectors as well as induction ports and valves, tying the cleaner to several intake and fuel-delivery areas. Its stated 5–20-gallon treatment range helps owners plan use against fuel volume, and the product is listed for gasoline or diesel. ATS says it helps restore factory fuel economy and performance, making it a preventative-maintenance option rather than a multi-step diesel kit.

Skip it if you need one bottle to cover more fuel; Archoil AR6500 Diesel Treatment lists capacity for up to 400 gallons.

Duramax owners wanting a cross-fuel carbon cleaner with a stated 5–20-gallon range can consider 505 CRF for routine treatment. Its per-bottle coverage is limited to that range, so larger-volume plans need another approach.

Listed on Amazon as: ATS Chemical 505 CRF Fuel System Treatment – 16 oz Powerful Carbon & Injector Cleaner for Gasoline & Diesel Engines – Help Boost MPG, Restore Power, & Reduce Emissions – Easy Pour Bottle

#9

9. Lucas Oil Fuel Treatment 5.25 oz

• Size: 5.25 Fluid oz

Best for: Small-bottle maintenance supply.

Why it ranks #9: The six small bottles are described for gasoline and diesel fuel systems, but the listing provides no Duramax-specific dose or cleaning directions.

Six 5.25-ounce bottles let Lucas Oil 10020 divide fuel treatment into smaller containers instead of one large bottle. The listing says it cleans and lubricates fuel systems, increases pump and injector life, and is compatible with diesel as well as other vehicle and equipment types.

The six-bottle pack provides separate small containers for treatment, while the stated uses cover cars, trucks, motorcycles, ATVs, boats, and lawn mowers. Lucas identifies cleaning and lubrication of the fuel system, along with helping increase pump and injector life and neutralizing low-sulfur fuel problems. These listed benefits make it a broad-use additive, but no treatment rate per gallon appears in the supplied product details, so tank dosing is not specified here.

Skip it if you want a stated total gallon capacity; Archoil AR6500 Diesel Treatment lists treatment for up to 400 gallons.

This pack fits owners who prefer multiple small containers and want an additive listed for trucks and varied equipment. Duramax shoppers who plan doses by tank volume should note that no gallon treatment rate is supplied.

Listed on Amazon as: Lucas Oil 10020 Fuel Treatment – 5.25 Ounce (Pack of 6)

#10

10. Red Line SI-1 Cleaner

• Size: 15 Fl Oz (Pack of 2)

Best for: Gasoline-system deposit cleaning.

Why it ranks #10: The listing describes a gasoline-focused fuel cleaner, so it is a poor match for a buyer specifically seeking a Duramax diesel injector cleaner.

Red Line SI-1 combines high- and low-temperature detergents to clean injectors, carburetors, valves, and combustion-chamber deposits. Its listed gasoline focus makes this two-bottle cleaner more relevant to gasoline owners than Duramax shoppers seeking a diesel-specific injector treatment.

The concentrated detergent blend targets deposits across injectors, carburetors, valves, and combustion chambers, while the listing also says it helps prevent corrosion in fuel systems. Red Line identifies gasoline stability and reduced gum and varnish buildup as additional aims, which frame its use around gasoline fuel maintenance. The pack contains two 15-ounce bottles, but the supplied product information describes it as a gas treatment rather than a Duramax diesel additive.

Skip it if you need a diesel additive for a Duramax; Hot Shot's Secret Diesel Extreme is explicitly formulated as a diesel fuel-system cleaner.

Gasoline-vehicle owners seeking detergent-based cleaning across several engine fuel-system areas may find SI-1 relevant. Duramax buyers should treat its gasoline focus as a firm application boundary and select a listed diesel product instead.

Listed on Amazon as: Red Line 60103 SI-1 Complete Fuel System Cleaner, Cleans and Prevents Corrosion in Fuel Systems, Cleans Injectors, Carburetors, Valve and Combustion Chamber Deposits – 15 Ounce (2 Pack)