Well than its up to you what to use if Liqui Moly is easily available for you
and you feel relax using it than use it else i believe good quality oil like Zic
performs like Liqui Moly there is Valvoline Champ 4t which is USA it costs
almost half price as Liqui Moly i have not used it but its has very positive
feedback from users also
20w50 oil is good to use in Pakistan as weather is hot in country
20w40 is good all rounder in Pakistani conditions
Stick to one oil in which you feel engine is running smoothest
Try Liqui Moly If you feel engine is running smooth sounding good
than continue using it no need to switch brands