Bro, I would sincerely suggest to go for 5w-30, API SN / SN Plus / RC, ILSAC GF-5, fully synthetic engine oil from some reputed brand, and it must be 100% genuine and original. If you want best for bucks, go for Total Quartz 9000 Future series, and change oil along with genuine, OEM Oil filter, after every 5,000 Kms, otherwise, Toyota is also good.
And happy to come across you after quite a long time! 