I don't see a downside to using Valvoline Restore and Protect exclusively, at least with normal driving and regular OCI's. I'm using it in all 4 of my vehicles and will continue to do so unless something else comes along at a competitive price point and proves to be a more well rounded product. But as it stands Valvoline Restore and Protect cleans, keeps everything clean and has shown to have very good wear protection in many used oil analysis. What's not to like???
I do 7-8 oil changes total per year between all 4 of my vehicles, nothing over 5k OCI's. However the Subaru Ascent goes no more than 4k OCI's due to the FA24DIT's innate ability to dilute the oil with fuel. In the Subaru I don't see any advantage to spending more on Amsoil or HPL since oil can't fix fuel dilution and extending OCI's doesn't make sense. Since I typically use higher end OTS oils anyways, Valvoline Restore and Protect might only cost me $30-$40 more per year with that many oil changes. That is worth it to me to clean potential contaminates left by previous oils and to maintain the cleanliness of the rings, turbo/VCT screen filters and other internal parts over the long haul. Especially since the F150 and Ascent are turbo charged direct injected engines. My 91 MR2 has reduced oil consumption by at least half in just two 3k-ish mile OCI's, that about my typical annual mileage on that car. If it was available for my motorcycle, I'd try it in that too.
