The more we read others opinion, more we become double mind or confuse.
Simply, follow whats recommended in Manual. Or you can experience by yourself by using different oils as per “others opinion”.
My opinion, is, never run after imported oils. Shell, Caltex, Total, Mobil, engines oils are best. Liqui Moly and others are just simple products with high price tags which becomes attraction for many of us.
on Xulfiqar Bhai's recommendation i am using Delo Gold Diesel Engine oil in my Petrol Car and results are more than satisfactory. Because my car is old and needs older grade engine oil. And Delo meets/exceeds all the requirements.