AR6500 incorporates a strong cetane boost and Archoil's proven combustion modifier technology to increase power and response at every fill-up.

By increasing the cetane rating of diesel alongside the cleaning properties of AR6500, combustion efficiency and fuel economy are improved which means less stops at the gas station, saving you up to $204 per 40.6 oz bottle of AR6500 (based on 10% MPG increase and average fuel prices January 2023).

AR6500 improves the lubricity of diesel fuel. Lack of lubrication can cause a variety of issues in both older vehicles which weren't built to run on ultra low sulfur diesel and new vehicles which are built with tighter tolerances, making a lack of lubricity potentially catastrophic. These issues include:

• Excessive wear

• Premature failure

• Costly repairs

The Engine Manufacturer's Association (EMA) recommends using fuel that produces a wear scar no larger than 460 microns to meet the needs of a vehicle. The diesel fuel specification in the United States (D-975) is only 520 microns, meaning additional lubricity must be added to meet the EMA recommendation - highlighting the importance of diesel fuel additives.

In wear scar testing (ASTM D6079), base diesel fuel produced an out-of-spec scar width of 614.5 microns. The same fuel treated with AR6500 produced a scar width of 347.5 microns - a 43% increase in lubricity. Improving lubricity extends component life and prevents premature failure.

Read our blog on diesel lubricity

Poor or incomplete combustion is one of the primary factors affecting the power and performance of your vehicle. As a result of low cetane fuel and a lack of detergents and lubricity, diesel fuel systems accumulate soot and carbon build-up in the key components including the injectors, turbo and DPF.

AR6500 contains the detergents, lubricity and cetane boost your vehicles requires to clean and maintain the fuel system.

Use of AR6500:

• Removes carbon injector deposits to restore spray patterns

• Prevents turbo lag and restores boost

• Reduces frequency of DPF regenerations

This easy, proactive maintenance of the fuel system restores lost horsepower and fuel economy and extends component life.

Vehicles with high mileage or symptoms of a restricted fuel system (including smoking, poor fuel economy, turbo lag and frequent regens) should be treated with Archoil AR6400-D Diesel Fuel System Cleaner first to speed up the process of cleaning the fuel system and remove heavier carbon deposits.

AR6400-D is a powerful, one-tank treatment developed to rapidly restore performance which rapidly cleans injectors, turbos and DPFs to remove performance-robbing carbon build-up.

Treat Rate:

Standard: 1 oz (30ml) of AR6500 per 10 gallons of diesel.

Power Boost: 2 oz (60ml) per 10 gallons of diesel. For best results use Power Boost dose in first tank of fuel.