ArchoilAR6900-D Max Advanced Diesel Additive Concentrate, 5L Treats 5,000L of Fuel, Diesel Fuel Injector Cleaner, DPF Filter EGR Valve Turbo Cleaner, Super Diesel Converter. (5Litre)

We have a 22 year old diesel car as a spare car, with 120,000 miles, run on supermarket diesel. The car is reliable, but given its age it doesn't like to start in cold/freezing weather. I dreed to think how dirty with carbon the injectors etc are inside the engine after all those miles. Anyway I have now added Archoil to the diesel, and so far I can report: after about 15miles the engine sounded quieter, pulls & revs better, even the old turbo starts as a lower rpm. Today it showed a temperature of just 1c in the car, and the the car STARTED ! I will be using Archoil every winter from now on.UPDATE: After driving 800miles, the trip computer now shows the car getting an extra 2mpg, given the cost of diesel this Archoil basically pays for itself in extra mpg once the engine has had a very good clean.

Best cleaner i have ever used! I have an Audi 4.2 V8 and this has improved my fuel economy to a whole new level! Just before full taking the vehicle i used about 70ML as I would have topped up about 70 Litres of fuel and within 10 mins i have seen so much smoke come out that the whole road behind me was foggy, car immediately felt smooth to drive, no black smoke as I have no DPF, and fuel efficiency has greatly improved. Excellent value for money. Very effective, and no smell.

Rated 4 stars as have no long term Data , I put a few treated tank fills through my mk7 ford transit , 175k on the clock , I wouldn't say it transformed the engine performance, but it is definitely smoother and seems to pull a little better .. a bit like the human equivalent to getting a good night's sleep 😅. And yes I guess I would compare I to putting premium diesel in , but then are you really saving much money in adding it yourself. I would have to do the math, but suspect there wouldn't be alot in itwith the price of fuel in the UK. But long story short , seems good 👍

Very good product. I’m using this for number of years. Keep engine running smoothly and injectors clean from soot. Highly recommended

Excellent productMore power better mpgCleaned the injectorsCar feels different well happy with it

This seems to be good quality.It's too early to give a genuine review in whether it works, but it does seem to prove the engine running, especially under speed.I'll update my review in the future if there's anything significant worth reporting back on.

I have a 2009 Mercedes 200 CDI which would sometimes stall or lose power which was worrying sometimes. I thought maybe the engine needed a good clean out and tried a couple of other brands which did nothing. So I bought this, full tank of fuel, added this product and hey presto it didn't do it again. Four tanks of fuel later and using this product the stalling and power loss hasn't happened. I don't think the bottle is a problem just use some common sense. I keep the bottle in the garage and not in the car. For the peace of mind it's given me it's worth the money and I'll keep buying it 👍

Even using the bog standard, cheap diesel, 50ml of this stuff put into my tank leaves the engine running noticeably quieter and the throttle response is slightly better. Not sure of any noticeable performance increase, but I'm sure it's extending the life of my engine. Would recommendDoes smell a bit though and it tends to get on you easily so you'll wanna wash your hands after and wear gloves (and keep the opened bottle in a Ziploc bag)Edit:It appears I’ve been using this stuff for 8 months now, in every tank. Along with regular oil changes I believe using a healthy amount of this in every tank (and occasionally filling witHpremium diesel) has improved my cars MPG consistently by about 5-10MPG depending on where I’m driving