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🚗💨 Unlock your diesel’s hidden power—clean, boost, and dominate the road!
Archoil AR6400-D is a concentrated 12 oz diesel fuel system cleaner designed to treat 30-40 gallons of diesel. It rapidly removes injector, turbo, and DPF deposits to restore engine responsiveness, improve combustion efficiency, and reduce maintenance frequency. Trusted by thousands with a 4.7-star rating, it’s the go-to solution for professional-grade diesel performance and longevity.










| Best Sellers Rank | #1,001 in Automotive ( See Top 100 in Automotive ) #5 in Diesel Additives |
| Customer Reviews | 4.7 out of 5 stars 2,889 Reviews |
R**R
Seems to be a good product
It seemed to work fine. I didn’t notice anything different whatsoever, but I know it helps in lubrication of my cp4
C**R
Works on gas turbo automobiles.
1999 Volvo S70 GLT light pressure turbo, 138k. Check engine light P0234 code. Turbocharger Overboost condition. Most likely the waste gate on the turbo fouled with carbon. I am tired of working on the engine of this car. I thought I would try a bottle of Archoil cleaner. I put in the whole bottle in and filled the tank, 18 gallons. After a quarter of a tank burned the check engine light went away. And the car runs the best since I've had it. Smooth. More power and seems to be quieter too. Thumbs up. Good stuff. I'm sold.
F**O
It Works! A DPF Miracle!
The DPF warning light came on in my 2014 VW Touareg TDI Lux and it was suggested that I run a tank with this product before I spend a fortune at the dealer. (To be detailed, my tank is 26 gallons, and this bottle will treat 40 gallons. So, I used 3/4 of the bottle and filled my tank. Added the remainder of the bottle and 10 more gallons of diesel when my tank was half empty.) Voila! The light went off within driving about 50 miles and has never come back on. That was a couple of years ago and I now run an Archoil tank about every 6-7 months, for good measure. The fine folks at Archoil recommend every 5,000 miles. I'm probably near that ballpark. Great stuff!
A**S
Should have found this product years ago.
AR6400-D works well cleaning the soot from my 6.7 Cummins. Regens extended to over 1,000 mile intervals. Will continue to use every 5K miles. A MUST product for diesel engines new and old.
J**Z
Good stuff
Definitely recommend I used it on 2.8 turbo diesel truck now have more power Definitely cleaned injectors 100 % recommend 👌
T**E
Not bad for the money
Make sure you fill your tank up and pour the hole bottle in . Run it Till the tank is almost empty and fill it up again. My truck seems to be running a lot better. Turbocharger kicks in faster I would definitely recommend it
R**J
Very impressive
All I can say is this stuff increased my fuel milage by 6 miles per gallon I will be using nothing but Archoil in my fuel!
K**S
Running great
It is great runs super great 👌
M**A
Surprisingly Amazing!
My Truck was running like garbage! 2000 F-250 7.3L. Was throwing 9 engine codes, would barely start, usually wouldn't stay running, and if I tried to drive it anywhere it was an adventure, no power, could die anytime and strand you, a nightmare. So I bought this Archoil Diesel Fuel system Cleaner and Archoil9100 Friction Modifier. Expecting to be disappointed but willing to take the risk before spending big money on repairs at a garage. I dumped the products in, and tried to start the truck right away (block heater had been plugged in for hours). It was about -8C out; couldn't get the truck to run for more than 45 seconds. Did this 3 times. The next day after leaving it plugged in over night, it starts under duress, but I manage to get the rpms up to 2000 and hold them there for about 5 mins. I let the truck come back to idle and leave it idling for 30 mins. Come back outside and it's still idling, good sign, sounds good too. Decide I'll drive it 1 km down the road and see how it drives to the gas station, I needed to fill it up after all, I hadn't followed the mix instructions on the fuel system Cleaner. I baby it down the road. Fill it up. Decide to give'r a rip on the way home and it runs awesome, decide I'll rip to the next town and get a coffee, truck pulls and cruises at 120 km/h easily. 2 weeks later ish ans still running great. Also I wiped the engine codes and ran it for a few hundred kms and now only have 1 code that shows up. Awesome product.
J**K
Unclear, but I'm great now! 2012 VW Golf TDI.
I can't be certain this product works. But it's not gonna stop me from using it. DPF issue. Auto regen failed + products (& AR6500), paid for manual. They also replaced a couple sensors. Recommended full DPF filter replacement for $4 k. Continue driving with product, light was on at initial start. Auto region initiated two weeks after. After two days of driving at high speeds & 2200 -2500 rpm's for an hour at a time, say 5 times total, The DPF light went off. **** ya! I can't be certain if it's the sensors, the products, or a combination of both, but I'm happy to see the light gone. I'd recommend these products. I do know they don't work on their own.
J**S
Fixed my frequent regens.
Fixed my frequent regens. Honestly shocked, surprised, Coincidence?. I have a 21 GMC duramax l5p. Started to get frequent regens. I bought it at 48k km. by 60k km engine light coming on for frequent regens as it could not complete a cycle in my short drive. So I buy a EDGE CTS3 to monitor the soot load. I found unloaded city and highway driving, at best 400km before it was at 100% soot load Sometimes even 300km. Including running their diesel additive the ar6500. I have to force driving regens on my agenda so I don't get stuck with it perpetually trying to regen on my drive to work. Towing my 5th wheel, about ~300km to a regen. Since 1 bottle in a tank. I forced a stationary regen on that tank and ran it through. 2x now I've reached over 800km before a regen. I believe around 820km ecm forces a regen as I've been at ~75% soot and one automatically starts on it's own. It's winter. Lots of idling to warm engine up before I drive to work, not much highway driving for me this time of year. I have not towed yet.
A**N
Bon produit
Recommandé pour les « professionnels » qui aiment entretenir les moteurs d'automobiles.
N**T
Great for f350!
Worked awesome for my system 2013 f350
Trustpilot
2 weeks ago
1 month ago