The good: The car idles and runs very smoothly unless under hard acceleration (see below). Normal driving is fine.
The bad: The car is noticeably sluggish under hard acceleration. It always feels like it's in Eco mode.
Not sure: Unless it's a gross difference, i don't know if i've taken an mpg hit.
The sluggishness may come from the fact this oil has a 3.7 HTHS? I don't know, but the performance difference is very noticeable.