Owned indus 2000 for 6 years i used
ZIC a+ , shell blue one, mobil, castrol, but what i observed is after 2000km i definitely had to flush and change oil, and parallel to this in mid checkup i often found level of oil to be minimized. Ive gone through zic for multiple time but being honest these mentioned oil didn't made me or my car satisfied.
any how once i took my car to defence motors for complete checkup (which cost a lot on my pocket) and there after a lot insist of my friend (who used to work there) i switched to Petron 20-50. well i can feel the difference that car engine was pretty much smooth and my ride felt much better comparatively. well after 2000km i went back to Toyota purchased all things which i used to change on every oil change which was (oil, oil filter, air filter) came to my mechanic for flushing and found that oil level was up-till mark color was still pretty fine,,,,,than my my friend (who used to work there) told me that it will give me 5000km. well from that insticnt till i sold my car (duration of 5 years) i used Petron with flawless satisfaction.
this was my 2-cents of experience no offense to other brands....but m still using petron for my other cars.