This is oil recommendation form owners manual Toyota Aqua.
Irrespective of ambient temperature, pls remember that Hybrid engine are not running full time. Due to repeated start and stop the oil gets drained to the sump.
Thicker oil will require more time to lubricate the critical parts like valve train etc. Thats the reason very thin oils like 0-16 & 0-20 are recommended.
Most important the oil should be Fully Synthetic API/SN 0-20.
Take note that LiquiMoly is semi synthetic.
I have informed Aqua users on every forum but still you guys want to do your own engineering. Its after extensive R&D that viscosity is determined.
Rest up to you guys.
This is picture from my Navigation system look at the milage I get.