Archoil's AR6400-D delivers a powerful and thorough cleaning service to the fuel system to quickly solve issues associated with carbon build-up and clogged injectors and should be used every 5,000 miles.
"Archoil AR6400-D Diesel Fuel System Cleaner is absolutely crucial to the longevity of the engine and the fuel injection system in all Power Strokes." - Bill Hewitt
Haven’t been able to check mpg yet but truck is running smoother. I use all the arch oil products.
Absolutely nothing to hate about Archoil!! Excellent products for todays diesel fuels. It’s a must for CP4’s to have the fuel additives; the 6400-D, and change your fuel filters every other oil change and say a prayer and your CP4 should be good for 100k miles when you should probably replace it to save you from the issues if it does fail. Archoil gives you the best advantages to saving your Diesel engine! Can’t go wrong with Archoil!
Use the products on my 2019 F350 6.7 . For Maintenance & prevention .
Incredible product. My 7.3 has 289,000 miles with the original injectors. Running extremely smooth now and restored my original fuel mileage!