I fortunately finished 1st tank on my own ( atleast I fuelled it to full and refueled it) it gave me 16 kmpl. With the 10W40 Suzuki Danish motors poured into it. (415 kms for 26+ liters)
Although before that it was doing 17-17.5 if I am not wrong. Since the lock down mostly me and my father are driving it. And because of long trips the average should be ideal.
Fueled her up yesterday, today its driven around 97 km the meter still shows 18.5-18.7 with fuel meter showing all bars full till now.
About the 0W20 there has been alot of concern on pakwheels for last 2-5 days about reliability of 0w20 in Pakistani temperature.
I have been using it on my WagonR and I have only felt it unbeneficial with fuel average atleast.
I am switching to 10W30 on WagonR once I switch il see what happens.
For Alto il stick to owners manual or dealer recommendation for now and I might replace it with base grade Yaris once the lock down situation is over. Altho I love it for its size. But I guess we need another sedan at home. We have all dinkies Alto, WagonR and Vitz besides a Corolla.
I am okay with the sound for now. I hope using 0w20 reduction of sound is real and not a placebo effect.
As I mentioned above that the dealership has used a rs.200 wala oil filter on my Alto. I'd never ever use. Maybe if (demag ghumei, il go change the oil and oil filter some day) but for now jessa hai theek hai.
Rs.2600 for maintenance after 5000 kms (7 months) is pretty cheap. Considering i am spending rs.6000 on WagonR for 5000 kms service.