Manual is really non-specific suggesting everything from a 0-30 to a 20-50 and to select grade on temperature, as long as its ACEA rated and atleast API SG.
I don't know a lot out this engine, not sure if a more robust HTHS is preferred and what is considered SAE too thin/thick.
As we tend to do a lot of quiet town driving, 2 miles each way twice daily, I've preferred thinner W rating for better cold starting/protection (in winter 0w cranks noticeably better than a 5w in our Corolla 1.8) and the recommended higher number as we do regular road trips.
I don't know a lot out this engine, not sure if a more robust HTHS is preferred and what is considered SAE too thin/thick.
As we tend to do a lot of quiet town driving, 2 miles each way twice daily, I've preferred thinner W rating for better cold starting/protection (in winter 0w cranks noticeably better than a 5w in our Corolla 1.8) and the recommended higher number as we do regular road trips.