Bro if 0w-20 is the recommended oil grade for your car and is also clearly mentioned in the owner's manual, you must stick to it! Trust me, engine 3 lac Kms + baad b kahein nai janay laga! IN SHA ALLAH
Bro, no offense, but ye aap ki assumptions hain; Engine manufacturer does not think this way.
If Honda has recommended 0w-20 for Civic Turbo, then its based on their R&D and vigorous testing.
Koi abc copany ho, banda maan b ley, but if 0w-20 is clearly mentioned in your user manual by Honda, you must strictly follow it. Rest, your choice!