Archoil AR6500 Diesel Treatment 40 oz — Treats 400 gal, Cetane Booster & Injector Cleaner for DPF/Turbo Deposit Control

Archoil AR6500 Diesel Treatment is a concentrated 40 oz fuel additive designed to treat up to 400 gallons of diesel to improve lubricity, raise cetane, clean injectors, and help reduce DPF and turbo deposits.

Use AR6500 at every fill-up to maintain fuel-system protection and keep modern diesel engines running smoothly. The bottle’s long neck and built-in measuring chamber make accurate dosing straightforward, while the formulation targets wear, combustion quality, and deposit control without altering routine maintenance schedules. It’s formulated for a wide range of diesel applications from light pickups to heavy equipment and modern high-pressure common rail systems.

How does AR6500 protect critical fuel-system parts?

AR6500 improves fuel lubricity and provides a protective film that reduces wear on sensitive components such as high-pressure pumps and injectors. By lowering friction and cushioning metal parts, it helps extend component life and can be especially beneficial in low-lubricity fuels or after ethanol-contaminated refills.

• Tested to improve lubricity (ASTM D6079) with measurable wear reduction
• Safe for modern HPCR systems, including wear-sensitive CP4 pumps
• Applied each fill-up for continuous protection

Will AR6500 make diesel engines run better and ignite faster?

Yes — AR6500 contains cetane-boosting components that can raise cetane by several points, promoting quicker ignition and more complete combustion. Improved combustion typically yields smoother throttle response and can reduce rough idle or hesitation in some engines.

• Cetane boost up to +8 points depending on baseline fuel quality
• Supports more consistent ignition timing and smoother combustion
• Helps engines approach ideal cetane ranges for better drivability

Can AR6500 actually clean injectors, DPFs, and turbo surfaces?

AR6500 includes detergents and deposit-control agents that dissolve and help carry away injector deposits, restoring spray patterns and atomization. By targeting soot precursors and softer deposits, it helps reduce the rate of DPF loading and minimizes deposit buildup on turbocharger components, supporting responsiveness.

• Detergent package removes injector deposits and improves spray patterns
• Helps reduce DPF regen frequency by limiting deposit formation
• Curbs soot-related turbo fouling to support boost recovery

How easy is it to use AR6500 and how much fuel does one bottle treat?

AR6500 is designed for convenience: pour directly into the fuel tank at each refuel using the long neck and measuring chamber for accurate dosing. One 40 oz bottle treats up to 400 gallons, so regular use is economical across light vehicles and larger fleets alike.

• Long neck and measuring chamber for straightforward dosing
• One bottle treats up to 400 gallons — suitable for routine use
• Add at every fill-up for continuous maintenance-level treatment

Who is this for? AR6500 is aimed at diesel vehicle owners and fleet managers who want an all-in-one fuel treatment to protect fuel-system components, improve combustion quality, and limit deposit issues without changing OEM servicing intervals. It’s suitable for light trucks, heavy-duty rigs, agricultural equipment, RVs, and any diesel with modern fuel-injection systems where lubricity, cetane, and deposit control matter.