I get confused about when Subaru went direct injection. I had assumed all F motors were…but maybe not.
Back on topic, sort of: i don’t know my Mustangs.
@relentless044 : Is it a V8, or an EcoBoost? I’m running Amsoil SS for the first time in my 3.5 EB, but won’t know how well it does for awhile, as seldom driven except in summers…the wild card is fuel dilution…but I’m hoping it will hold up to fuel dilution (and/or shearing) better than run-of-mill synthetics.
Of course “…hoping…” is different from “…sure…,” in that last sentence.