@sharjeel.akhtar88
It is better to get your drain old Engine oil, do engine flush with flush oil, then add New Engine Oil Zic X7 10w40 Fully synthetic with new Guard Oil filter & Air filter.
Then also flush your radiator and after flushing, add Toyota Coolant (Purchase only from Toyota 3s dealer directly)
Similarly change your gear oil and buy Suzuki Gear oil from Suzuki 3s Dealers.
BTW in which city are you located? always mention city location so that focused solution can be provided here at pw forums that where you would be recommended to visit
https://zicoil.pk/product/zic-x7-10w-40-vhvi-tech/