AOA everyone
I have corolla GLI 2009.
Its 84000 km driven,
All oil change from Toyota, after every 4500 km.
Toyota motors always added Toyota petron 20W50 in my car.
I need a serious opinion from the experts.
Can I change my oil grade, from 20W50 to 5W40.
I want to go for liqui moly oils grade 5W40 fully synthetic.
Please suggest some thing for me......