MAXIMIZE DIESEL POWER, MPG
& PROTECT YOUR INVESTMENT
MAXIMIZE DIESEL POWER, MPG
& PROTECT YOUR INVESTMENT
& PROTECT YOUR INVESTMENT
REVIVE YOUR VEHICLE'S PERFORMANCE
The most noticeable problems with your diesel car, truck or RV are often linked to the fuel system. Poor quality diesel and a lack of maintenance can lead to reduced engine performance, hard starting, rough idling, increased fuel consumption, black smoke and engine misfires.
Archoil AR6500 Diesel Treatment is the superior all-in-one diesel additive, developed to maximize engine power and extend the life of your vehicle. AR6500 increases fuel lubricity to protect your engine, keeps components clean for optimized performance and improves fuel economy with a big cetane boost at every fill-up.
COMBAT POOR QUALITY DIESEL FUEL AND AVOID ENGINE FAILURE
In the United States, the quality of diesel fuel available at the pump rarely meets the specification of engine manufacturers, making fuel additives an essential investment for any diesel owner. Developed to address the problems caused by carbon build-up and a lack of lubricity, additives help to:
- Clean the fuel system
- Lubricate and protect the engine
- Improve fuel economy, power and response
Maintenance is crucial if you want to keep your diesel running like the day it left the factory. Unmaintained fuel systems will inevitably lead to a decline in engine performance and eventually to the premature failure of components including injectors, turbos and DPFs.
THE ONLY TREATMENT TO CLEAN THE ENTIRE FUEL SYSTEM
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 and maximize performance.
AR6500 Verified Customer Reviews
★★★★★ - "I’ve been using Archoil for 4 years. I’ve noticed my truck runs smoother, has a little more pep and has improved my mileage... I don’t fill up without it."
★★★★★ - "My engine has 305,000 miles on it. It gets 18 miles to the gallon, is smokeless and continues to have excellent power. I am convinced Archoil products contribute significantly to this long-lived performance."
★★★★★ - "Works as advertised, if not better than advertised! My truck was doing a regen every 27 miles prior to use. After the first tank with this additive, it is now going through a regen every 64 miles."
"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
Boost Cetane & Increase MPG
AR6500 Diesel Treatment 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).
Clean Fuel System Components
AR6500 contains the highly concentrated detergents, lubricity and cetane boost your vehicle 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.
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.
Improve DPF Performance and Reduce Regens
Carbon deposits in the diesel particulate filter (DPF) create a backpressure, causing performance to suffer as exhaust flow is restricted.
This stops the engine working as intended and results in reduced fuel efficiency, a lack of power and in more serious cases, engine failure. DPFs with excessive build-up will also need to regen more frequently.
AR6500 keeps the DPF free from heavy carbon deposits to:
• Reduce regen frequency
• Restore performance
• Avoid engine damage by preventing a clogged DPF
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
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.
The Cost of Avoiding Easy Maintenance
INJECTORS - You can usually expect injectors to last 80,000-100,000 miles but with the simple maintenance routine of using AR6500 Diesel Treatment, injectors can last much longer, potentially for the entire life of the vehicle.
TURBO - Deposits forming on the exhaust side of your turbo negatively affect performance and will eventually result in premature failure of the turbo.
DPF - Carbon deposits in the DPF restrict exhaust flow which, in more serious cases, could cause engine failure. A new DPF could cost anywhere between $2,000-$10,000, depending on the kind of vehicle you're driving.
AR6500 FAQs
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.
