i went to intan matang for major 20k service. i brought caltex semi. they recommend either shell or petronas. since my car still under warranty, the customer service lady even making faces and whispering with her colleagues. however, she admit that caltex eo is good but she bebel2 to me since warranty still ada.

i tried petronas & shell helix. petronas is so-so, shell helix - engine becomes garang. currently with caltex, i notice that the engine sound is low n not garang anymore