of course..
I myself was seriously looking for an oil after petromin ultra 7 ( it was a damn good oil).
Abt fake Castrol,Brother that was what i thought too, i thought that Castrol company is dead after the PSO and castrol agreement ended..
However then i talked to company spokesman of castrol and they say that they have an agent in every big city, (try to get your oil from an authorized dealer, ask the castrol company abt their authorized dealers..).. they are really coopertive, i even advised them to advertize on Pakwheels but dont know why castrol is not advertizing on pakwheels..
you can get fake oil in all the brands, not just castrol, and believe me ZIC is quite notorious abt fake oils..
Now abt the efficacy of the oil, google for engine oil bible
and you will be able to understand what the engine oils should do. they say that 80% of damage to engine/valves etc occur during initial cold start Castrol magnetic clings to the engine parts till the next time the engine is started so that the wear is minimmized.
P.S i am not posting any links, numbers of castrol cause it may be against the pw policy, google it and you ll find your answers after you contact them..
true..