
New cars now don't really require breaking traditionally as older cars used to do, you have run 1350 km, i suggest you to get the free oil change at 2500 kms from 3S for warranty purposes and then switch to fully synthetic oil. i don't really think changing oil would void warranty but in honda Atlas case warranty gets void, and anyway they hardly claim warranty and only engine warranty would get void, rest suspension gearbox etc warranty would not be void.
Don't use 5W-30 in your corolla, consult the viscosity chart in the owners manual,heres a pic, its not for hot climates, use 5w-40 preferably liqui moly, or if you can stretch your budget use mobil 1 5W-50 advanced fully synthetic, i am using it in my Altis and its driven 6800km driven and i also switched from petron plus 10W-30 to it and performance is amazing now fuel economy is also good
