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Based on 1379 reviews
Diesel Performance Kits
Chris R. (Scottsdale, AZ, US)
Great product!

Great product! I have used them in my 2016-F 350 6.7 Crew Cab for the past couple of years. I just started adding their gas products to my wife's 2017 Ford Edge. I'm very pleased with the results.

Old Ford is a new mustang....

06 Ford 250 Super Duty Normal to me slow crank sluggish start till it was 3 miles into a trip...
Used Archoil and not long stated waking up a lil everyday I drive it now its running like a well oiled machine...
Will always use this product!!

Diesel Performance Kits
Thomas B. (Atlanta, GA, US)
We’ll pleased

Recommend these products, used them for the first time and saw immediate improvement in fuel mileage and lower temperatures.

Great fuel saver!

Love this product, seems to work great.

Diesel Performance Kits
Forest (Sequim, WA, US)

We just bought a 2015 F350 and are using the fuel and oil additives. So far so good. Great mileage and runs so quiet and smooth. Only 69,000 miles and plan on many more using these products. Love that you help Military coming back from duty and entering the work force.

AR6400-D Diesel Fuel System Cleaner
Aaron P. (Anaheim, CA, US)
Great stuff

I have a 2000 F350, 7.3 4x4 dually. Last year I dropped the fuel tank, cleaned it and the screens out. I also put in a new fuel filter after cleaning the bowl out. Amazing there wasn't much to clean out but I went and used the AR6400 and the AR9100 additives. The results were immediate for both less smoke, more power, and easier starts. This is the second time I've used the AR6400 cleaner, mainly as a preventative. Since the first time I used AR9100, I've also been using AR6500 fuel additive. The overall result is about a 1.8 mpg increase. With both the cost of repairing a diesel engine and the cost of diesel. These products are definitely worth it.

AR6400-D Diesel Fuel System Cleaner
Joe B. (Columbus, GA, US)
Archoil test

Lightly used ‘04 F250 109k I thought the truck ran great before Archoil but I wanted to give it a try. I used about a third of the engine additive and a third of the fuel additive. I noticed the truck had more power in normal city driving and seemed peppier out on the highway. I also noticed it would climb a steep hill in my neighborhood without downshifting. That rarely happened before great product!

Worked well

I saw an advertisement for this and thought I’d give it a try. Almost immediately I saw an improvement in performance. I will be using this as recommended by the manufacturer from now on.

Not snake oil

The only thing I've found that actually works. Dropped number 3, bought an injector, changed oil and added Archoil. Cleared up and got another year out of it.

AR6400-D Diesel Fuel System Cleaner
Jerome S. (Blanchardville, WI, US)
Tried it and liked it.

I have to say it most definitely cleaned out the turbo on my 07 6.0. I could see the difference in the PSI right away. Knowing this, I would have to claim it also cleaned everything in the fuel system, including the injectors. Haven't been running it long enough to check mileage, but does seem to be more responsive.
The starting is better as well. The F-250 just turned 128,000 mi. I would recommend trying it, seems a low cost easy fix.

Diesel Performance Kits
Emanuel D.T. (Hacienda Heights, CA, US)

My injectors were sticking causing the engine to sputter after adding the gas additive it cleared up, now it's running smoothly

AR6500 Diesel Treatment
Jeff H. (Philadelphia, PA, US)
So Far it seems to be working

I have a 03 Duramax with 280,000 miles on it. Second set of injectors at about 200,000. The AR6500 has improved power, MPG, and seems to be a lot quieter. I am on my 4th tank of fuel so far I am happy.

AR6400-D Diesel Fuel System Cleaner
Dan T. (West Linn, OR, US)
Great product

Added to my 2018 Ram Cummins Noticeable throttle response difference Within a short amount of time

AR9100 Oil Additive
Tracy C. (Oklahoma City, OK, US)
Good Stuff

We have used this at every oil change since we had our 2005 F350 Bulletproofed. Truck has run great consistently alone and while towing our fifth wheel. Also use the Archoil 6500 diesel treatment at every fill up. Very pleased with these products.

AR6400-D Diesel Fuel System Cleaner
Buck F. (Idaho Falls, ID, US)
Seems to keep my 7.3 Powerstroke running fine!

I have been using Archoil fuel system cleaner since I bought my 7.3. It started every morning through the Idaho winters without loping. My truck runs smoother than friends trucks who do not use Archoil.
I also use the Fuel additive and friction modifier and my injectors work great. Its money well spent to keep a 20 year old truck running so well rather than replacing expensive parts that could have been preserved.

AR6400-D Diesel Fuel System Cleaner
Donnie H. (Cincinnati, OH, US)
Great product

I already use the fuel additive from archoil. This seems to have really reduced the regens on my truck. Will continue to use it.

Good product.

I will be using this in every oil change. Everyday when I started my truck it would blow thick white smoke for about a minute or so and now it starts with no smoke at all. Very impressed

Very Pleased with Archoil

After two tanks of fuel with the Archoil cleaner, my diesel had noticeably better response, and over a 3mpg increase pulling a 42 ft 5th wheel. I am very pleased and would recommend Archoil to any diesel owner.

Works as advertised

One of our old 7.3's has been hard to start for some time now. Lots of white smoke and no start at all of it's even slightly cold out.
Put a bottle of Archoil in the oil and ran it for work that day. Next day it started like a new truck. No smoke and fired off instantly. I am very impressed and needless to say we will be using the product in both our 7.3's from now on.

Great Service

Truck has more power and idles smoother

AR6400-D Diesel Fuel System Cleaner
Kim S. (Seattle, WA, US)
Great stuff

This product help get me better fuel mileage. A must buy product. Like the rest of Arch oil products it’s the best product in the world.

AR9100 Oil Additive
Stephen N. (Soldiers Grove, WI, US)
So far it's pretty good

Shipping was quick and I like the way it was packed. My engine seems to run a little smoother. Added some to my Harley to see if it runs cooler. So far it's pretty good.

AR9100 Oil Additive
John P. (Churubusco, IN, US)

After using AR9100 in my last oil change, I'm hooked. I'm changing my oil again this week and yes AR9100 is on hand and will be added.

AR6400-D Diesel Fuel System Cleaner
George H. (San Antonio, TX, US)
Customer Service A+

My order arrived with a leaking container. Customer service promptly shipped a replacement.

AR6200 Fuel Treatment
David L. (Houston, TX, US)
Gas vs diesel

Great results for my diesel no Improvement V8