Archoil AR6400-D Diesel Fuel System Cleaner - Cleans Injectors, Turbo, DPF & EGR

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.

This has been a great product, we have a fleet of box trucks. One truck was having frequent regen issues we started using this product and after a few uses we started seeing results. In my experience its not a one bottle fix all. but when used as directed it can prevent and help fix minor issues in the DPF system. I would recommend using this product before issues arise! But also a good option for minor DPF issues

My 2024 Ram with the HO cummins was throwing lights for too frequent regen. I thought I'd give this a try, but honestly, I expected to be visiting the mechanic soon. After 1/2 tank of fuel with this treatment the check engine light went out, the DPF indicator went to zero and the truck runs better and gets better fuel economy. I'm a believer; I'll be using this stuff from now on. Highly recommended.

I have a 2015 Duramax that was starting to throw faults and even kicking the truck into limp mode. When initially starting the engine, it was noticeably running rough as well. I ran 2 full tanks with a bottle in each tank and I cannot believe the difference it has made. The truck starts up and runs smooth now. All rough running has vanished completely. All my faults have cleared and no more limp mode. All I can tell you is that this stuff works well. I must have had some carbon buildup somewhere in the fuel system or maybe the turbo, but whatever the case, it has cleared it up completely. The truck is running like new again. I'm honestly amazed how well it worked. I had high hopes from reading some of the other reviews because most of them had high praise, but this stuff exceeded that and even more. I can't give it enough praise.... I never write reviews on anything I buy but in this case I felt compelled to share just how well it worked and how satisfied I am with this product. If your looking for something to clean out the carbon buildup in your diesel... look no further.

I was getting frequent regens in my 3.0L Duramax. I've run HSS Diesel extreme before and decided to try Archoil out both Fuel system cleaner and fuel treatment. Overall results are positive, but for the extra cost I'm not sure it's completely worth it in my experience.

Cleaned my injectors within 100 miles

Great product throttle response was superb 👏

This stuff works great. I had a check engine light for clogged def system. Poured this in and cleared my code.

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.

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.

It is good

Superbe produit performant ! Je le recommande !

Fantastic product to keep emission system clean and functioning properly. 280000 km and never a "check engine" light or problem. I only use this when really working my 6.7 Cummins pulling my camper over a long distance. Otherwise, I use Archoil's regular treatment with every fill up. I will continue to purchase.