My 2005 F-350 had a serious vibration when the engine was under a load on acceleration. Within 100 miles of using Archoil, the vibration was gone. Shipped fast and excellent customer service. I would highly recommend to any Powerstroke owner and I will be adding Archoil at every oil change.
This works!!! I use it as directed in all engines and I can hear a difference and see a difference on the gauges as soon as pouring it in. My new VW TDI runs cooler on the highway! My Foxbody is running smoothly!
It did all the things as advertised. Smoother starts, quiter injectors, better mpgs..
It will go in my 6 liter every service.
I’m very pleased with your product. It gives me a sense of security knowing that my engine is working hard and can take the beating.
Let me start out by saying that I've been using the oil additive and fuel additive for a while now. My 1997 F350 7.3 was exhibiting some injection issues when cold started up here in Michigan so, I started using the Archoil additives about 2 years ago. Any issue I had vanished. I did switch from 15-40 Rotella to 5-40 Rotella synthetic when I started using Archoil products and all is well.
Fast forward to now. The passengers side injection harness melted so replacement was necessary (not an easy job, but doable). What truly amazed me was when I pulled the valve cover (to replace the valve cover gasket and harness lead in) was how clean the overhead is and how clean the inside of the valve cover is. There was absolutely nothing in the way of blow by or sludge in the valve cover and the interior of the head as well as the injectors and all the mechanical parts look as if the engine has no miles on it when, in fact, it has 110,000 miles, mostly pulling a farm trailer with round bales on it.
I'm sold on Archoil and 5-40 Rotella, for me, an unbeatable combination. In my opinion, Archoil AR9100 and Archoil Fuel additive is the best.