REVIEWS / CASE STUDIES
PRODUCT: AR6900-D MAX
What a Find
Quality:
I use this product in my 2017 Evoque because they are thwart with DPF issues. Not Whilst your dropping some of this gear in ya fuel. It’s like a different motor. Idles like new and has completely enhanced the way the car drives. It feels like it’s been remapped. I will be using this product for the long term.
Review by Dave0166
Posted on 22/10/2021
Does What It Says On The Can
Quality:
Have been using this on my 2001 19d for 2 or more years and it really does work. Have used redex in the past with not really any noticeable difference. For the first start on a cold winter mornings my van was very slugish untill it warmed up not with this though it run normal. I think I’m getting 4 or 5% better fuel economy but I haven’t done a definitive test yet. Works out at about 2p a litre of diesel (only 1ml per litre) if you buy a litre bottle which is a lot cheaper than a premium forecourt diesel.
Review by Alan
Posted on 22/05/2020
Super Additive!
Quality:
I have been using this for over a year, after first adding the AR6400-D to shock my system. My engine is very quiet
both at tickover and on the road and I calculate that using supermarket diesel with AR6900-D I am getting what is
claimed by Shell et al for their top diesels for much less money. Very pleased with this product.
Review by Timbo
Posted on 11/12/2019
DIESEL TECH MAGAZINE REVIEW
PRODUCT TEST: ARCHOIL AR9100 FRICTION MODIFIER AND AR6200 FUEL MODIFICATION COMPLEX
The purpose of our in-house evaluations is to weed through all the hype and get down to answering the basic questions of does the product really work and if so, is it worth the cost? In this case it’s actually two products from Archoil that we really wanted to test. Normally I’m not one to get caught up in celebrity endorsements, but when an auto enthusiast like Jay Leno starts raving about a product, I tend to take notice…
PRODUCT: AR6400-D MAX
Mechanic in a Bottle!
Quality:
My 2010 LR4 came up with restricted performance, P0235 and P00BD I think it was. Thought the worst…body off to replace the turbo!
Read alot of reviews on the AR6400-D and as with most things I had a niggling doubt but bought a couple bottle anyway. Put in 400ml in my tank (fuel warning on so there wasn’t much in it) then filled with 43L of diesel. Restricted performance stayed on after a few runs, so I stopped, engine off then on again…light still on! I was thinking by this point I wasn’t that lucky to find a product to work. So plugged in my diagnostic tool, cleared the fault, tried revving…well, the car shuddered and revs went into the red line!!
NO FAULT LIGHT AND NO RESTRICTED PERFORMANCE!!
WOW, just saved me alot of work!! Thank you so much!
Review by Natty
Posted on 15/11/2020
AR6400-D Amazing Cleaner!
Quality:
Both the Jaguars I have bought second hand benefited hugely by using Archoil AR6400-D Max intense cleaner diesel additive which was recommended by a friend (I now use it every 3-5,000 miles). Amazing stuff. It transformed the performance of my previous second hand XF 2.2D after 1 tankful. Then I got a 3.0D S and it
suddenly started going so much better after 1.5 tankfuls, so I’ve used 3 tankfuls to make sure it had cleaned it well.
They both had a sudden improvement after an amount of the AR6400-D had done it’s cleaning, my theory is that the variable vanes on the turbo were seizing up and suddenly started working properly again, it is the only explanation I can think of for the huge performance improvement!
I now use AR6900-D at every fill up when not using the AR6400-D.
Definitely products to be recommended!
Review by James
Posted on 02/09/2021
Outstanding Results
Quality:
Used this in my Jaguar S Type diesel which was actually running ok but this improved fuel consumption by about 3 mpg so well worth the price I am now using standard diesel instead of premium with archoil AR6900-D in every tank saving me about 17 pence per litre and performance improved so great value for money I now average 38mpg compared to 34 mpg before using the additives.
Review by Peter
Posted on 26/02/2020
TESTED: ARCHOIL AR9100
REDUCES HEAT & WEAR ON RACE ENGINE & TRANSMISSION
DUTCH VEE RACING WORMERVEER
OBJECTIVES: The transmission of a Formula Vee is the same as in the VW Beetle 1300. The engine is significantly tuned and the standard rpm limit increased to 6,400 rpm. As a result the transmission is having to work much harder. With ambient temperatures exceeding 25OC the transmission fluid
temperatures rise to 110OC. This causes power loss, reduced protection and increased wear…
PRODUCT: AR6900-P
Hesitation Gone
Quality:
I have used this in my 1.5T Insignia over the past 12 months, there was sometimes some hesitation and the possibility there could be carbon build-up on the intake valves with it being direct injection. The hesitation gradually went away while using AR6900-P so will continue using it. I have used Archoil products for the past 9 years in petrols and diesel and always been pleased with the products. Always quick delivery from Powerenhancer too!
Review by Bannan
Posted on 16/03/2021
MPG Improvement!
Quality:
I want to express my surprise at the difference it has made to my Ford Kuga Titanium X 4X4 Turbo auto by adding your Archoil AR6900-P Max Advanced Petrol Synthesis to one tank of petrol (12 Gallons).
This car has only covered 14700 miles and I am the second owner. It was exclusively used in London by the first owner and on short town runs mainly by me, apart from occasional motorway runs of 100 miles or so.
The actual figures are: Prior to adding your product: 32.4 Mpg approx. overall 140 motorways and 20 in town. After: 38.4 mpg on the same run with same load. 6 mpg improvement!
Quite a difference!
Review by Dr Richard White
Now Soot Gone
Quality:
Been using archoil products for years and always found them to work. This is my first trial of AR6900-P Max Advanced Petrol synthesis as I have the 1.6t SIDI engine, which is producing a lot of soot; especially on the twin tailpipes so will update this post when I’ve given it a try. I have been using AR6200, which has been helping but not getting to the parts that AR6900 claims to clean so time will tell.
Review by Lock-n
Posted on 04/07/2017
TESTED: ARCHOIL AR9100
DYNO TEST ON BRAND NEW CVO HARLEY DAVIDSON
OVERHEATING HARLEY CASE STUDY
OBJECTIVES: Woodstock Harley Davidson are one of the largest Harley dealers in North America. With over 85,000 square feet, 20 technicians and 2 complete dynomometers. They were keen to complete before and after power
runs with Archoil’s AR9100 on a brand new CVO Harley.
PRODUCT: AR6400-P
Well Worth the Price!
Quality:
Hi! I am not the type of person that contacts suppliers and complains about or praises a product and to be quite honest I only purchased the above, because when I had a service the mechanic said I might benefit from a fuel line cleaner. I was quite happy with the way my 06 Focus was running but I thought I would try it and after looking online yours looked one of the best.
So, I put it into 45 litres of petrol and of I went! I have only used about half a tank so far, but I am very impressed, it ticks over so smoothly that it’s hard to tell if the engines running and it runs smoothly in 5th gear at 30 mph with an instant response to the throttle at any time. Immediate starting, rapid acceleration it’s like a new car, I still can’t quite believe it! I used to tell people that these “treatments” were rubbish; I stand corrected and recommend AR6400-P-MAX to anyone who has done significant mileage.
Review by Rick Smith
It Works
Quality:
This product works just as it’s advertised. I use it regularly on my series 3 Discovery and at 250k miles it keeps the engine clean and running smoothly. Last MOT the emissions test had to be repeated because the inspector didn’t believe how clean the exhaust was. I recommend it.
Review by Andy
Posted on 02/04/2022
Very Good Product which Really Works!
Quality:
This is a very good product which really does work. My husband uses this product four weeks before an M.O.T. and it really does the job, not only that but it seems like a tonic for the car, the car really does run well after using this product.
I would recommend this product for any petrol car especially the older ones as it really does clean up the engine as well as using the best petrol for helping to clean out the engine with the additives used. This product is even better than Redex for petrol cars.
You will not regret buying and using this product.
Review by Jeanie
Posted on 06/01/2018
TESTED: ARCHOIL AR6200 and AR9100
2010 AUDI S4 B8 3.0 TFSI EMISSIONS TEST
BACKGROUND: This well maintained vehicle using Archoil additives was in for a routine MOT. This includes an emissions test and we were keen to see the results after using the Archoil Products.
PRODUCT: AR9100
Is Well Worth it in my Humble Opinion
Quality:
I just love that it’s an oil additive that actually works – and you can feel the difference. I remember buying some Slick50 back in the late 90’s for my first car which I knew like the back of my hand, so I could sense any small differences in performance; but then having realised how much money I wasted I vowed never again, and just ensured I ran on synthetic.
I’ve used the AR9100 in all sorts of cars, the petrol ones seem to respond best, but that could be due the high mileage on my test cars i.e. they will have lost more power which gets restored. I used some in my Granddad’s car (ex-mechanic) – he thought I’d rebuilt the top of the engine 🙂
Review by Richard Frank
Posted on 06/01/2016
Feeling The Difference
Quality:
I bought 4 year old diesel car. Before car sounded a bit rough and sluggish while accelerating. Coming from petrol I thought it was normal. Did full service, oil and filter change and added archoil 9100. The first thing I noticed immediately was the sound of the engine.
Sometimes it’s gone so quiet that while sitting in a car on a traffic light it sounded almost like petrol until you rev it. I
am not sure how much it is cleaning the inside of the engine but I did notice responsiveness has improved on lower gears after few thousand miles. Before Car used to stall sometimes on first gear while trying to move from a standstill. Now no more. Will definitely buy again.
Review by Nauman
Posted on 07/12/2018
Excellent Product!
Quality:
Can’t fault, saw this on Jay Leno’s garage YouTube, added to my oil on my cb500 revs went up 200rpm on tick over, MPG has improved a lot even riding quick, was using just over 1ml of oil per mile, haven’t had to add a drop since, I will always use this from now on.
Review by Amazon Customer
Posted on 06/05/2017
TESTED: ARCHOIL AR9100
OIL TEST RESULTS ON CATERPILLAR ENGINE FOR MS SARCELLE
BACKGROUND: MS Sarcelle runs a series of heavy machinery that suffer from excessive engine wear.
OBJECTIVES: To reduce engine wear as well as extend the usable life of the engine oil.
PRODUCT: AR9200 V2
A recent convert
Quality:
I have been using the Diesel fuel additive for a period of time and have been very satisfied with the results.
First time user of this particular product and after less than 600 miles I have noted a distinct reduction in the noise level of the engine shortly after starting off.
If this is a result of the additive after such a short time, then it was a worthwhile investment. I will be keeping a watchful eye for any other improvements that occur to my 18year old MB W211/E270 during the coming months.
Review by Roger
Posted on 09/08/2021
Really Makes a Noticeable Difference
Quality:
Great Product – I added this to my BMW F31 330d after its latest oil/filter change after an email exchange with Andy. The car has done 78k miles and I’ve used Archoil 6900 D Max for over 3 years and 50k miles to great effect.
I’ve done 1000 miles since adding this additive and the difference in sound to the engine when cold starting is very noticeable, much quieter and smoother than before. As the engine warms, the effect remains, much quieter (to the point I can’t hear it when driving gently) and the engine feels more punchy and smooth when accelerating.
I’ve not noticed the fuel efficiency benefits but I’m not concerned about that per se. Having had the car from 1 year old and looking to high mile it, engine care is paramount so I’ll be using this with the oil/filter changes every 7-8,000 miles and the continued use of AR 6900 in every tank.
The Archoil products do exactly what they say on the tin, aid performance whilst keeping the engine and fuelling systems in great shape.
Review by Henry
Posted on 25/11/2020
Noticeable Performance and Economy
Quality:
I use this along with the Archoil diesel additive and have found quite a significant difference in performance. The engine seems really eager to go after adding to my tuned 2016 Seat Leon 184bhp (Now 240bhp) and fuel economy is close to 62mpg on my daily commute. I will use this product after every oil change. This product clearly reduces friction within the engine which can only be a good thing!
Review by Chris
Posted on 21/09/2018
TESTED: ARCHOIL AR9100 and AR6200
EXTENDING USABLE OIL LIFE OF A MITSUBISHI S12 R-C2MPTK ENGINE BELONGING TO MS SARCELLE VREESWIJK
BACKGROUND: The Mitsubishi S 12 R-C2MPTK normally receives new lubricating oil every 500 hours and the customer is looking to reduce this.
OBJECTIVES: The goal is to maintain low oil contamination and oxidation through a more complete fuel combustion and prevent sludge build-up in the rotating parts of the engine.
PRODUCT: AR9400
Good Results
Quality:
Have been using this and other Archoil products for some time on several older cars with higher mileages and had very good results helps smooth running and less pollution and less dirt in oil.
Review by Amazon Customer
Posted on 01/08/2021
Will Buy Again
Quality:
2ltr D engine is now runs smoothly…
Review by Amazon Customer
Posted on 03/08/2019
TESTED: ARCHOIL AR9100
RACE MACHINE CENTER (HILLEGOM) INCREASED PERFORMANCE ON MINI COOPER
BACKGROUND: The engine oil in a Mini Cooper race engine is also used to lubricate the transmission. This sets out challenging requirements and demands on the oil. To remain competitive, it is important to investigate every possible advantage as 1 – 2 additional horsepower can make all the difference. RMC Hillegom also experience temperature spikes in the oil.
PRODUCT: AR2810
Fixed the Car
Quality:
Our car was hesitating intermittently and we wanted to rule out the MAF from being the issue. In 30 minutes the MAF was off, looked dirty, sprayed this stuff on the filament wires, let it dry for 15 and then back in the car. So far so good the cars not gone all kangaroo again.
Review by Mr. J. I. A. N
Posted on 25/02/2018
Brilliant!
Quality:
I have to say that I was sceptical about this product. My 407SW was lacking power so I thought I would clean the MAF and see. I have to say that I was amazed with the before and after results. The inside the MAF was completely filthy! So black I couldn’t see a thing.
After spraying it the difference was immense, it looked brand new! Of course the proof is in the driving. So coupled with a new air filter off I went. The difference was very noticeable. Definitely more power. I would Definitely recommended this product to anyone thinking of cleaning their MAF. Delivery was very fast as well.
Review by Ian K
Posted on 13/02/2017
Work Perfectly For Me
Quality:
My BMW X5 started cutting out when pulling up to traffic lights and junctions, then rough idling when starting. I used the Archoil to clean the mass air flow sensor and once I had put it back in place and started the car it ran as smooth as silk.
Over £120 for a replacement new Bosch or Meyle sensor, £8 for the Archoil. What a saving.
Review by D. P. Pegg
Posted on 29/04/2017
TESTED: ARCHOIL AR6200 & AR9100
OVERHEATING ISSUES ON A 2009 HARLEY SCREAMING EAGLE ROAD GLIDE
BACKGROUND: Customer has temperature issues with his bike. When sat at idle for a few minutes the back cylinder would overheat and engine would then cut out. The oil pressure at idle would drop to around 5 PSI. This was an indication that insufficient oil was reaching parts of the engine and it would then overheat. Mileage 47,780 and weight of bike is 900 lbs.
PRODUCT: AR2820
Wonderful
Quality:
Changed the oil on the R129 today – again, 16 years old with 115k on the clock – after 5k miles. Used Motul 8100 5-40 and AR9100; ran AR2300 for 800 miles pre-change and then flushed with AR2820.
The state of the oil filter was staggering – the inner metal drum was as clean as when it went in, and there was nothing to be seen caught in the paper pleats whatsoever (a proper old school Mahle metal drum filter). Runs like the day it was made.
Review by John Moser
Posted on 06/01/2016
A Complete Engine Oil Change
Quality:
Carried out my annual engine oil/filter replacement recently and administered the Archoil AR2820 Professional Engine flush as per instructions.
I could detect a definite chemical smell as the old oil drained out and a qualified engine mechanic friend volunteered that he does the exact same procedure on his car too. It gives me peace of mind knowing all the old oil is flushed out before pouring in new low ash oil.
Review by Michael Hurst
Posted on 30/11/2016
Very Good Flushing
Quality:
Flushed the engine very well will buy again when I need some.
Review by Elcracko
Posted on 14/12/2017
TESTED: ARCHOIL AR9100
REDUCTION WEAR ON ROLLS ROYCE AQUAMASTER US 17-01 VESSEL SD JACOBA, KOTUG INTERNATIONAL BV, ROTTERDAM
BACKGROUND: With a century of experience combined with a modern fleet, KOTUG has built its reputation as a competitive and innovative player in the maritime industry for harbour towage, coastal & deep sea towage, salvage and emergency response, tug management, chartering, brokerage, offshore services and assistance to the dredging industry.
TESTED: ARCHOIL AR6200 & AR9100
SKODA EMISSIONS TEST BEFORE AND AFTER
BACKGROUND: A customer with a Skoda Octavia, 207,000km that was unable to pass an emissions test.
OBJECTIVES: To restore any lost engine compression, clean the fuel system and through the use of a fuel catalyst, reduce emissions so that the vehicle would pass the test.
TESTED: ARCHOIL AR2300 and AR2100
PREVENT CARBON BUILD-UP AND STABILIZE OIL ACIDIFICATION ON THERMIC OIL SYSTEM AT AVEBE TER APELKANAAL
BACKGROUND: Avebe uses thermal oil in a closed system for one of its manufacturing processes. Thermic oil is used to maintain temperature of molten media, such as plastics or similar. Due to the high temperature of the thermal oil, carbonaceous deposits are formed…
OBJECTIVES: To remove existing and prevent further carbon build up.
