Havoline is really good. Itâs a global oil giant - caltex/chevron.
You may also go for Total fully synthetic oil but in my experience not as good as Havoline.
Run 0w20 or 5w30 fully synthetic oils the engine will run for decades. Just donât go for thicker grade than this no matter the mileage â- which our desi ustaads love to suggest - a remnant of decades old thinking when fully synthetic oils were not developed, and engines did not have tight clearances.
As for gear oil, Iâm not sure whatâs the change interval for manual transmission.
For coolant, if itâs never been changed before you can go ahead - lasts 100,000 km or 5-6 years. Not the red one though that is short life.
For brake fluid only go to dealership that has proper brake fluid changing machine. Others will ruin it. I have heard Toyota gateway motors has it but give them a call.