The Only Diesel Treatment Your Vehicle Will Ever Need
Unlike other diesel fuel treatments, which may provide a cetane boost, injector cleaning or enhanced lubricity, Archoil AR6500 Diesel Treatment does all three PLUS removes carbon build-up from the post-combustion system.
AR6500's highly concentrated formula contains no fillers and utilizes Archoil's proprietary fluid technology to remove carbon build-up from the turbo, DPF and EGR. AR6500 delivers a complete clean and boost package to the entire fuel system to protect your engine, improve performance and maximize fuel economy.
Clean Diesel Injectors
AR6500 contains highly concentrated detergents which remove internal diesel injector deposits (IDIDs) and carbon build-up from injector tips.
Benefits of clean injectors include:
- Improved fuel atomization
- Reduced carbon deposits
- Enhanced fuel economy
AR6500 ensures correct injector spray patterns, resulting in a more complete combustion and lower emissions for optimized performance.
Boost Cetane
AR6500 incorporates a strong cetane boost and Archoil's proven combustion modifier technology to increase power and response at every fill-up.
Benefits of increased cetane include:
- Improved combustion efficiency
- Reduced ignition delay
- Improved fuel economy
The higher the cetane number (CN) of fuel, the faster the fuel ignites which produces a more complete and cleaner fuel burn. Your vehicle typically requires a CN of 47-50 in order to run as intended by the manufacturer but the majority of the US is being served by diesel with a CN of 40-45.
Clean the DPF
Unlike other additives, AR6500 Diesel Treatment cleans carbon build-up from the diesel particulate filter (DPF). Deposits in the DPF create a backpressure, causing performance to suffer as exhaust flow is restricted.
AR6500 removes build-up and keeps the DPF free from heavy carbon deposits to:
- Reduce regeneration frequency
- Restore MPG & performance
- Avoid engine damage by preventing a clogged DPF
A clean DPF is essential for maintaining performance, reducing emissions and improving fuel efficiency.
Improve Fuel Lubricity
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
Many diesel owners have experienced huge bills following CP4 pump failure which is most commonly linked to a lack of lubricity.
In wear scar testing, AR6500 produced a 43% increase in lubricity. Improving lubricity extends component life, improves fuel efficiency due to reduced frictional losses and prevents premature failure.
Prevent Turbo Failure
Carbon deposits on the turbo lead to:
- Increased turbo lag
- Decreased boost pressure
- Overheating
- Increased wear and potential damage
- Reduced airflow
AR6500 clears the turbo of soot and carbon, reducing turbo lag and boosting throttle response. This reduces excess heat and wear, helping to avoid premature failure of the turbo.
"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
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.
