If your car is also prius, then the best best oil for it for all year round use is
ZIC OW 0w-30 Hybrid.
There is already ZIC OW 0w-30 but it was simple.
Now recently they introduced same oil for Hybrid cars. Use it and enjoy the best results.
You can change it after 6~7 K.
Don't feed 40 or 50 weight oils in hybrid cars. These are good & perform well with thinnest oils like 0w-20, 0w-30, 5w-20.