The way I keep cars is that I own them not the other way around, I have used plenty of oils to say this as a fact that imported brands oils are better than local.
I have used Toyota oem oils, caltex, few others over the years.
I always found "imported" oils like Mobil1 superior to other similar oils.
I have used Mobil1 5w30, 0w40 for 10k kms odo reading and not to forget plenty of idling, the day I poured and changed the oil cars feel is totally same.
Many other brands lose the feel around 3000-4000-5000 kms.
For me longer drain interval is ideal as I don't want to waste time every other day for oil changes.
I have heard much position reviews of amsoil but for now I am still sticking to mobil1.