well here is my story after long using mineral oils.......in my honda it felt heavy and unresponsive especially in traffic,i had to push accelerator till floor to move it,i waz bearing it,i made a thread abt it too but of no use and waznt able to get rid of problem,i thought my radiator is not performing upto mark dats why unresponsive in traffic but in these winters car waz not able to strt in mornings appeared as battery had drained off,,,,,thn i poured zic a+ into it,cn u believe.... it became so light and enjoyable to drive which i waz missing these years and mashALLAh no problem with morning starts as well however i noticed one thng dat blue smoke poster is talking abt appers whn i strt it in morning for 5 to 6 secs,thn to normal bhaap wal smke...........however im regularly chkng oil levels its within da markings mtlb not decreasing,,,,earlier heaviness may be due to fake oils whch i purchased from cng pumps in peshawar but dis tym i bought oil from a proper dealershp or it had to do smthng with viscosity,,,,,,,,,,,,,,,,,,but i will advise poster to keep using it in these winters with optimum level whn weather chnges he cn shft to mineral oils,bt dats my experience and i knw zddp is necessary for flat tappet engines but im impressed with symthtic
oils used in past mobil super 2000 10w 40,enoc 20w 50,havoline 10w 30,shell
