ArchoilAR6400-D MAX Pro DPF Cleaner Diesel Fuel System, Diesel Injector Cleaner, Turbo, CAT Cleaner Concentrate - High Strength Carbon Removal & Exhaust Emissions Reduction for MOT Pass (400ml)

Had my emissions light come on in my 09 Audi Q5 3.0 tdi and tried Liqui Molly first. Light was back on on the next fill up. Called a carbon cleaning company in town to set up an appointment and they suggested I tried Archoil AR6400-D Max first. I was reluctant at first as I just wanted my system cleaned once and for all without spending another 20 quid. I purchased and followed the directions and 5 months later, the emissions light is still off and getting great MPG. I'll purchase this again and run it through every 5K miles as suggested.

I was struggling a lot with my 2017 Toyota Avensis diesel engine due to a full DPF warning on the display. I tried many products, but nothing worked. Finally, I decided to visit a mechanic, who told me they could clean the DPF but warned that my low daily mileage would cause it to fill up again. Then, my office security guy advised me to use half a bottle of Archoil 6400 in a full tank and drive at least 60 miles. Once the DPF full message cleared, he recommended using Archoil 6900 at a ratio of 1ml per liter during every refuel to prevent clogging. I followed his advice, and I’m very impressed, this is the only product that truly works. I highly recommend it to anyone struggling with a full DPF. Thanks!

Must admit I was sceptical that any fuel additive did anything other than waste money. However, my old diesel engine was starting to idle heavily so I decided to give an additive a try. Research on the web suggested Archoil was one of the better ones.This size of bottle is sufficient for one tank of fuel. Run your tank low and take the Archoil bottle with you to the station. Break the foil seal on the bottle and tip the bottle into the fuel tank. The long thin neck on the bottle means it goes down the fuel inlet with no splashing of the contents. Then fill up with Diesel, this will give the correct concentration of additive for a typical family sized car.I used to get around 600 miles per tank, used plus remaining miles always hovered around a total of 600 figure, now it is around 680 miles. But the biggest improvement is in engine idling, the engine is much quieter now.I do not experience any improvement in acceleration so I am still sceptical about the claims for improved performance but miles per gallon and a smoother idling are definitely improved for my 2 litre TDI engine.

Easy to use with clear instructions. Make sure you wear gloves because it’s smelly stuff. It was packaged perfectly preventing any leakage. In terms of quality, it’s too early too early to tell. If successful it’ll be good value for money

If you have a problem with you diesel particulate filter (DPF), your ERG valve sticking or anything in the exhaust system, the whole exhaust system, that is caused by particle deposits, this will dislodge the particles, clean them off your turbo vanes and cause your DPF to regenerate. Unlike almost every other product which claims to be able to do this.I have used it on a 2015, 2.2 RR Evoque which started going into limp mode almost every day on holiday then got stuck in it after a spending an hour in a big autobahn jam near Stuttgart. Advice from home and the German RR dealer was to replace the DPF. €3000+. I hired a car to finish the holiday as you can't get up mountains in limp mode. I learnt about this on YouTube while I was away.After a tankful in Stuttgart with this in it, driving it back to the West Midlands and twice to London since:1. Limp mode has not reoccurred2. The engine is quieter and appears to be running more smoothly especially under acceleration3. There may to be a small improvement in mileage. The forecast range seems to have increased by 20-30 miles on subsequent refuelling.I now have a can under the boot floor but am fairly confident it's fixed the DPF regeneration problem.What it won't do is repair any problems that are caused by holes, leaking pipes and faulty hose clips.I'd like to know why dealerships don't recommend it. It does exactly what it says on the can.

Used this product over the years and always performed good in all the cars I've used it for .Highly recommended

It okay and no smell just doesn’t last that long