I can honsetly say that my wifes car starts quieter and runs smoother,no lie!!!! I haven't checked mileage yet but it's gonna have to top 21.5 running 85% city,just got that running Mobil dino 5w30. The Impala has 72k on the clock and has seen M1 0w30,GC 0w30 and a run of dino 5w30. This run is going the 17500 with SSO and an EAO filter,I'll uoa at that mark and then see if I can push it to 35!!!! Never thought I would be changing oil less and a year is unheard of!!
Aveo seems peppier but I don't drive this but maybe once a year,it'll go a year without reaching 17k,it does rev alot being a standard hooked to a 1.6L.
I'm loving this oil so far and only have 4 quarts on hand,after my love affair with GC 2 years ago and having 200+ qts on hand,I wanna restock my SSO but won't need any for a year is it worth buying more now??? I feel the need to have the power of the mighty SSO!
Going from a big time skeptic and nay-sayer I am a full fledged Amsoil guy!!!