day before yesterday i went to buy shell Red 4trs 20W50 for my city 2007 90K driven from National oil plaza karachi. retail price written Rs.2300/ and i got it at Rs. 1770/= i confirmed the guy 3 times is it original, isnt it repacked, he said no its original. There was a Caltex oil which is for Rs. 1850/= for 4 ltrs.