THE ULTIMATE DIESEL KIT
The must-have kit for diesel owners. Restore and maximize your performance with this best-seller.
Upgrade your oil with AR9100 to protect your engine and increase power and response. Revive your fuel system with AR6400-D and boost performance at every fill-up with AR6500.
"My engine is noticeably quieter and a lot more responsive. It runs better now than it did in 2006 when I bought it!"
DIESEL FUEL SYSTEM KIT
Fully restore and maintain your vehicle's fuel system with this kit.
AR6400-D delivers a rapid deep clean to remove carbon build-up from injectors and key fuel system components. AR6500 boosts cetane, improves lubricity and keeps the fuel system clean to increase MPG and prevent premature failure.
"I had some turbo lag - gone. Engine had rough idle at times - gone. Fuel economy has increased between 1 and 1.5 MPG."
The Ultimate Winter Diesel Kit
The Ultimate Winter Diesel Kit
The must-have winter kit for diesel owners. Restore and maximize your performance in even the coldest of weather. Revive your fuel system with AR6400-D and boost performance at every fill-up with AR6300. Upgrade your oil with AR9100 to protect your engine and increase power and response.
"For winter driving this is a must. Keeps diesel systems clean and flowing.”
Winter Diesel Fuel Kit
Fully restore and maintain your vehicle's fuel system with this kit.
AR6400-D quickly and thoroughly cleans carbon deposits from injectors, the turbo and DPF. AR6300 offers anti-gel protection, enhances cetane levels, improves lubrication, and maintains a clean fuel system, helping to improve fuel efficiency and reduce the risk of early component failure.
"The winter treatment is amazing. We had -40 degree weather for 2 weeks and my pickup started right up all the time."
"As a former mechanic I never believed in additives but this is my 3rd purchase of this product and used on 3 different vehicles with great results. On my BMW X5 it made the idle smooth and the MPG up by 2. On my LML increased the regeneration interval from 300 to 600 miles."
AR6400-D Diesel Fuel System Cleaner
"The engine noise became noticeably quieter after about 20 to 30 miles. Before Archoil this truck was lucky to get 14 MPG on the highway. I drove back from New Mexico with a slight tailwind and AR6500. One leg I got 20 MPG!! This truck in 60,000 miles has NEVER gotten 20 MPG before!"
AR6500 Diesel Treatment
"I bought the winter additive this is my 2nd bottle for my 6.7 powerstroke .. when it hit -5 degrees and wind chill - 25 this stuff is awesome my truck started up in a flash last yeah at this time it was felled up with the Ford additive and double treated it had to be towed and both fuel filters changed at the same temp .. not this year thanks to arch oil winter additive I also using oil additive and diesel cleaner I’m very impressed and will keep buying your product, awesome stuff !!!!"
AR6300 Winter Diesel Treatment
"I use it in all my diesel engines. I was amazed when I pulled the valve covers. It was showroom clean - no sludge, no blowby residue, nothing. Could easily read the serial numbers on the injectors. As far as stiction goes, I don't have any with my Power Stroke and it runs smooth and fires right up."
AR9100 Friction Modifier
Customer Reviews
Based on 767 reviews
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(732)
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R
So the day I bought my 2023 Chevy 2500HD, I already began experiencing more than frequent regens. Now I knew that since I wasn't going to pull anything with it; and since it's my daily, I knew there would be more regens. But the truck seemed like regens were occurring more than not. So I used the initial fuel system cleaner and then begin using the AR6500. The regens seemed less frequent. I also noticed a 1-2 mile per gallon MPG increase. That may not sound like much, but in the long run, it's huge. I will continue to use Archoil products as long as I own a diesel.
N
This has made a huge difference in my f450. Fuel has increased by 3 miles to a gallon and runs smoother easily cranks. Very impressive. 100% recommend this
Product.
B
Love this product. Increased my mpg from 11 to 17mpg after just the first application! Easy to use as well!!
V
Ive been using these products since 2016, and have enjoyed the protection and the better fuel mileage.
