I’m running Amsoil SS on my 3.5L ecoboost f150 (2014). I currently have 167k miles on it and will upload that result when it comes.
First sample in May-23 had Lubeguard added. Second sample is pure amsoil.
I ran this truck on mobil1 5w-30 since new with a mobil1 filter 5-7.5k mi change...
