for oil selection sir, API rating of CI-4 would be perfect for your Vios, as from my observation, under this API rating Zinc level is 1200 PPM which is safe your catalytic converter. I was also in the lookout for the best oil possible for my ride and here are some of my recommendations for you
1. Mobil Delvav MX 15w40
API Rating: CI-4
TBN:12
Zinc: 1200
Price: 250 per liter at Any Ace Hardware
2. Caltex Delo Gold Ultra 15w40
API Rating: CI-4
TBN: 10.2
Zinc: 1200 Pho: 1100
3. Mobil 1 Turbo Diesel Truck 5w40 - very good oil, a bit pricey though. around 450 per liter (cash and carry makati)
Zic and Bardahl oi okay din sir. basta check mo muna yung product data/technical sheet and watch out for the zinc level. basta hindi lalagpas ng 1200 PPM safe cat con mo.
+ pair it with a good oil filter and you'd be good for 10,000-12,000 KM before your next oil change.
