Archoil Diesel Fuel System Cleaner 4-Pack (12 oz) — Rapid Injector, Turbo & DPF Deposit Control

If your diesel feels sluggish, smokes during acceleration, or the DPF regenerates more often than it used to, a focused fuel system cleaner can help remove combustion deposits that hinder spray patterns, turbo response and particulate trap efficiency. Archoil AR6400-D is formulated to work quickly: pour the measured dose into the fuel tank, drive normally, and let the chemistry break down harmful build-up across the fuel system.

How quickly will I notice changes after using AR6400-D?

Many users observe smoother idling and crisper throttle response after a short driving session post-treatment, with fuller benefits appearing after a tank or two as deposits clear. Results depend on how clogged components were and driving conditions.

• Expect initial improvements within one tank in many cases
• Large or long-standing deposits may require repeated treatments
• Use as directed for best, consistent results

How do I use a single 12 oz bottle correctly?

Each 12 oz bottle is blended to treat roughly 30–40 gallons of diesel. Pour the bottle into a near-empty or partially filled tank and then fill the tank to mix the product; drive normally so the cleaner circulates and contacts injectors, turbo inlet areas, and the DPF system.

• Pour into the fuel tank, then fill with diesel to ensure dilution
• One bottle treats about 30–40 gallons of fuel
• Repeat every ~5,000 miles or sooner if symptoms return

What specific parts of the fuel system does AR6400-D help?

AR6400-D is formulated to address deposits throughout the diesel fuel path—fuel injectors, combustion chambers, turbocharger inlets and DPF surfaces influenced by combustion byproducts—improving spray atomization and reducing the factors that cause frequent DPF regeneration.

• Breaks down injector deposits to restore spray patterns
• Controls deposits that impair turbocharger response
• Helps reduce DPF-affecting soot and ash precursors

Can I use AR6400-D with other Archoil products?

Yes—AR6400-D is designed as a deep-clean treatment. For ongoing maintenance, follow-up with a daily-use fuel conditioner to sustain cleanliness, cetane support and lubricity at the pump.

• Follow with Archoil AR6500 at fill-ups for continuous maintenance
• Deep clean first, then maintain with lighter, frequent doses
• Compatible with most diesel engines and common diesel fuels

Who is this for? Archoil AR6400-D is aimed at diesel owners who want a targeted, fast-acting cleaner to recover lost performance—truck drivers, fleet managers, and diesel enthusiasts noticing smoke, rough idling, delayed turbo response or frequent DPF regenerations. It’s well suited for warranty-conscious operators who prefer periodic deep cleans followed by routine maintenance with a lighter treatment at each fill-up.