we'll see how this goes... Im thankful for nighthawk tearing down stuff and sending parts out and sharing the results. With that being said. When a 6.0l has fairly bad and noticeable injector stiction AND has a good maintenance record oil every 5-6k fuel every 12k ish for 78k miles. Then I notice the stiction one morning when I start it up and get a quote for new injector plus labor (I wasn't inclined at the time and due to the military didn't have the free time then), I probably dealt with it for a couple of months due to my nature of always over analyzing irrelevant but in my mind related threads and claims from companies etc. I started reading about polishing this part blah blah seemed kind of difficult to me at my experience and someone recommends I try archoil and showed me a video of the injector be and after adding the fluid had me convinced that: It was cheap enough, and wouldn't cause any damage at least.
I waited for the snake oil and thought about whether it was worth it, would it work, I hoped it would work at least lol. About a week later the little bottle arrived and I had already changed the oil and left some out for the additive, poured her in and started. NOTHING the injector stiction was still there. I didn't know how long, or if I just risked my oil system...
maybe 1-200 miles later I start it up and its gone... weather was basically the same, it was colder January in the Bay area. I put 40k more miles on the truck and only used the archoil once more after that and then tried the next two oil changes just with my usual. Regular delo 15w-40 from walmart and the motorcraft filter.
Sorry for the long read but the stuff worked for me and the new owner has never had issues with the injectors since I did in 2013. So is it enough evidence for me yes... for others no and maybe not. But I only ran it twice and would only use it for a similar situation.
so take it with a grain of salt I like a little bit of snake oil for my situation but it may not really work and it could of been something up with my truck.