Archoil AR6500 Diesel Treatment (40 oz) Treats 400 Gallons,

Product Overview

Archoil AR6500 Diesel Treatment is a high-performance diesel fuel additive designed to enhance engine performance, protect critical components, and maintain fuel system cleanliness. This 40 oz formula treats up to 400 gallons of diesel fuel, making it ideal for regular use across a wide range of diesel-powered vehicles and equipment. Engineered for both light-duty and heavy-duty applications—including modern high-pressure common rail (HPCR) systems—AR6500 delivers measurable improvements in lubricity, combustion efficiency, and emissions control. Whether you’re operating a pickup truck, RV, commercial vehicle, or industrial machinery, this additive helps maintain optimal engine function and reliability over time.

Key Features

• Easy Use at Every Fill-Up: Designed for convenience, AR6500 features a long neck and built-in measuring chamber, allowing precise dosing directly into the fuel tank with each refuel. One 40 oz bottle treats up to 400 gallons, ensuring long-lasting protection and value.
• Universal Diesel Compatibility: Formulated for use in all diesel engines, including light-duty trucks, SUVs, vans, RVs, and heavy-duty equipment. It is fully compatible with modern HPCR fuel injection systems, ensuring broad applicability across current engine technologies.
• Improves Lubricity (Tested to ASTM D6079): Increases fuel lubricity by up to 43%, providing essential protection for fuel system components. This is especially critical for wear-sensitive parts like the CP4 high-pressure fuel pump, which relies on diesel fuel for lubrication and cooling.
• Boosts Cetane Up to +8 Points: Raises the cetane rating of diesel fuel by as much as 8 points, promoting faster ignition, smoother combustion, and reduced engine noise. Many engines perform optimally with a cetane level of 48–50, while standard pump diesel typically ranges from 40–45, making this boost particularly beneficial for cold starts and drivability.
• Cleans Fuel Injectors: Contains a powerful detergent package that actively removes harmful injector deposits. By restoring proper spray patterns and improving fuel atomization, it enhances combustion efficiency, leading to better throttle response and fuel economy.
• Supports DPF Health & Reduces Regenerations: Helps prevent excessive deposit buildup in the diesel particulate filter (DPF) by reducing soot and combustion byproducts. This contributes to fewer forced regeneration cycles, helping maintain DPF performance, extend its service life, and reduce maintenance costs.
• Maintains Turbo Efficiency: Minimizes soot and deposit formation that can restrict turbocharger performance. By keeping turbo components cleaner, it helps restore boost pressure, improve throttle response, and deliver smoother acceleration.

Technical Specifications

• Product Name: Archoil AR6500 Diesel Treatment
• Size: 40 oz (1.18 L)
• Treat Ratio: Treats up to 400 gallons of diesel fuel
• Application: Diesel fuel additive for all diesel engines
• Key Functions: Lubricity improver, cetane booster, injector cleaner, DPF and turbo deposit control
• Tested Performance: Lubricity improvement verified per ASTM D6079 standard
• Cetane Increase: Up to +8 points

Benefits & Use Cases

AR6500 is ideal for diesel owners and operators who want to maintain peak engine performance and protect expensive fuel system components. It’s especially valuable for vehicles operating in demanding conditions—such as towing, hauling, or extended idle times—where fuel system stress and deposit formation are more likely. Regular use helps ensure consistent combustion, reduces the risk of injector fouling, and supports emissions system reliability. Fleet managers, long-haul drivers, RV enthusiasts, and agricultural or construction equipment operators will benefit from its ability to reduce maintenance frequency and improve fuel efficiency. The additive is also suitable for seasonal storage, helping stabilize fuel and prevent degradation over time.

Important Notes

Always add AR6500 directly to the fuel tank at each fill-up for consistent protection. Use the integrated measuring chamber for accurate dosing. While compatible with all diesel engines, including those with advanced emissions systems, always consult your vehicle manufacturer’s guidelines when using fuel additives. Store in a cool, dry place away from direct sunlight. This product is not intended for use in gasoline engines. One bottle provides treatment for 400 gallons; adjust usage based on fuel consumption to maintain optimal performance benefits.