Went for second oil change at 7472 kms at Toyota Islamabad, Aabpara. Asked for just oil change, gave my own oil filter and additional 200 mls of Taglon 5w-50. Warranty book was stamped. Total cost 3,468 PKR.
I checked today the 5,000 kms used Taglon, it was super clean, looked like almost new oil. In terms of acceleration and fuel economy and sudden accelerations and speeding (in a safe manner on empty roads) did not notice any performance loss. It could run good for another couple of thousands of kilometres, but decided to stick to recommended interval for the oil change.

Don't sit in the customer lounge, but today it was too humid in the workshop. They have a corner for gamers to play games, while they play games with their cars 