use engine oil in which you feel engine is running smooth
just to define things for you 10w40 is thinner oil and in pakistan good
to use in winters only and specially bike like cg its engine gets hot so not
recommended to use in hot weather engine oil like with grade 20w40 is good
all rounder in pakistani conditions many also prefer 20w50 as temperature in Pakistan
remains above 40 in hot summer though i personally stick with zic m5 which is 20w40
aapki daily running toh achi khaasi hai aur Mueen bhai jo engine oil acha lage us h ko jaare
rakhe baar brand tabdeel karne ki koi zaroorat nahein aur engine oil hameesha kisi barhe dealer
se fake engine se bhare parhe hai market aur un mein faraq karna mushkil hai