Archoil AR6400-D Diesel Fuel System Cleaner is a highly-concentrated diesel fuel additive formulated for rapid cleaning and fast restoration of performance. It’s designed for drivers who want noticeable results from a single treatment - ideal when performance has dropped, idle has become rough, response feels sluggish, or fuel economy (MPG) has declined. Easy one-bottle use: Pour AR6400-D directly into the fuel tank and drive normally. One 12 oz bottle treats 30-40 gallons of diesel fuel. Use as a periodic deep clean every 5,000 miles or as needed. What AR6400-D does: Rapid injector cleaning: Quickly removes injector deposits to restore spray patterns and improve atomization for smoother running, better throttle response, and more efficient combustion. Post-combustion support (turbo + DPF): Targets deposit formation to help restore turbo response and support cleaner DPF operation, helping reduce buildup and regen frequency. Complete diesel system cleaner: Designed to address performance-robbing deposits across the diesel fuel system and support consistent drivability after treatment. For all diesel engines: Suitable for all diesel vehicles and equipment, including modern HPCR (high pressure common rail) systems. Great for pickups, SUVs, vans, RVs, heavy-duty trucks, and diesel work equipment.

• RESTORES DPF PERFORMANCE: Reduces deposit buildup to support a cleaner DPF and reduce regeneration frequency
• TURBO DEPOSIT CONTROL: Reduces deposit buildup that affects turbo response, supporting smoother acceleration and restored boost
• MAINTAIN RESULTS WITH AR6500: Follow up with Archoil AR6500 Diesel Treatment at every fill-up to keep the fuel system clean and address insufficient lubricity and cetane levels in diesel from the pump

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Common questions