Aoa everyone. I have a corolla gli 2010. Which i purchased used in very good condition. I didn't know which engine oil previous owner was using. When i bought the car I started using Kixx pao 5w40. I have no issues whatsoever but i wajt to ask if i can switch to Kixx 5w30.
The other thing is transmission noise. Which can be heard in all gears. Its a whining noise. Like oooonnn. It is less when accelerating but when the car decelerate it comes more like eeeennnnnn. Like in some old cars. Gear oil was changed by me to company specs. How can i make that noise go away.
Seniors please help. Car is driven almost 1,30,000kms.