skyblue - Look at it like this. Fill in the blank below with ANY of the oil weights mentioned in this thread, as long as the latest ILSAC is used.
You are not likely to EVER have an oil related issue with your Mirage if you use __________ viscosity oil, and do regular oil and filter changes.
So now, you are free to choose what you want and when you choose to, you can put this issue behind you. On the other hand, I don't believe most others, including myself, mind having a good discussion.
View my fuel log 2020 Mirage ES 1.2 manual: 42.6 mpg (US) ... 18.1 km/L ... 5.5 L/100 km ... 51.2 mpg (Imp)