@haris_taurus90
Kindly please be noted when you talk about the synthetic engine oils you don't need to be worry about the harshness of all winter although it is bellow freezing point or it is temperature exceeding 50 centigrade a synthetic engine oil can withstand with all temperature ranges so if your car engine is at the lightest viscosity oils then as far as you can go with lighter oils you should use it because they mimize the friction and wear , reduce engine noise , protect the engine , provide quick start ect, so do not go to heavier oil stick to ZIC A+,
Thanks