Review on Restore Your Diesel Engine Performance With Archoil AR6400-D Fuel System Cleaner by Alejandro White
This stuff actually works!
My 2008 motorhome with a 6.7L Cummins was running poorly: sluggish throttle, terrible mileage and slow starts. I replaced various filters (fuel, air), sensors and other components with no change in performance. I added a bottle of Archoil AR6400-D to the tank and within 100 miles there was a very noticeable increase in performance. After a couple of tanks my mileage went from 6 to 10mpg. I used to have to keep it floored to hold 60 miles per hour and now it holds 65 easily. Highly recommended.
- Completely solved my egr problem. Will order again.
- The product may not work for every type of diesel engine
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