MAXIMIZE DIESEL PERFORMANCE AT EVERY FILL-UP
MAXIMIZE DIESEL PERFORMANCE AT EVERY FILL-UP
Boost Cetane & Increase MPG
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).
Improve Fuel Lubricity
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.
Clean Fuel System Components
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.
DIESEL FUEL SYSTEM KIT
Remove Heavy Carbon Build-up
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.
The Diesel Fuel System Kit includes AR6400-D and AR6500 to maximize fuel system performance.
AR6500 FAQs
AR6500 improves lubricity in fuel, cleans and maintains the fuel system and adds cetane for a boost that can be felt at every fill-up. AR6400-D is a highly concentrated one-tank fuel system cleaner to be used every 5,000 miles for rapid cleaning of heavy carbon build-up.
AR6500 is suitable for all diesel vehicles, including newer systems such as High Pressure Common Rail.
AR6500 will remain stable indefinitely if kept away from sources of heat and sunlight.
No, AR6300 Winter Diesel Treatment is the product you need for cold weather. AR6300 contains all the benefits of AR6500 plus anti-gel protection up to -44ºF.
"Seeing this F-350 run as smooth as it did the day it left the dealership definitely made believers out of us."
"Archoil is the Real Deal"![]()
Diesel Power Magazine
"We are seeing great results using Archoil."
"I highly recommend Archoil products"![]()
George Swift, Mechanic, Jay Leno's Garage
"Improved fuel economy, smoother running engine and no issues with cold starts."
"We're now believers in Archoil"![]()
Diesel Tech Magazine
