Castrol magnetic is best option no doubt but question is ,
Is this real in Pakistan because I open castrol Pakistan website, there is no product info, contact info is old and not working distributor info is not correct, site is old and not renewed.
So in country like Pakistan if this kind of behaviour of a company then it very easy for fake oil sellers to sell there oil under umbrella of some famous brand.
And if come to Zic, that is only famous in Pak, not internationally ,
International oil brand are, Mobil, castrol, caltex, shell may be few other which may be I don't know. But as for as Zic they said that it is from Korea & we r gladly use it here why gulf countries USA, Korea it self don't use zic. Also they made good marketing as advance synthetic oil makers in last few years in our country so they r enjoying huge profits.
In present snerio I think only caltex, shell and total oils r reliable if they r from original company distribution source.