I,ve been using Archoil for a while now. The first time I used it, I poured it directly into the filter housing but removed the center of the housing first. The part you push your oil filter onto comes out easily with one torx bolt. T27 if i remember. I used 16oz on the initial treatment. WOW. what a difference, runs way smoother and quieter. Now I just use 8oz every oil change and pour it in with the oil. (Amsoil Series 3000 5w30) Just order Archoil on Amazon and it ships right to your door. I really recommend this stuff. I have 250,000 km on my original injectors now and am not having any issues at all. Try it, I don't think you'll be disappointed.