after using 15k under 10w-40 as recommended, today i shifted to 0w-20.
car felt smoother - well it always feel smoother after oil change be it 10w 40 or 0w 20
car felt quieter - now that can be placebo effect, but i definitely felt a TAD bit reduction in engine sound.
Acceleration improved-i think this is the only logical benefit of thinner and fully synthetic oil, i think noone will disagree on this point.
Costed me 8k including oil filter.
Now the question part:
10W-40, my drain internal was 4000Kms
wat shud be drain internal for 0w 20 as its fully synthetic and best oil being offered by Pak Suzuki.
P.S. i had to buy 4.1 liters now i have extra 400ml 0w-20 oil spare, i dont know wat to do.