ang dati kung oil is SAE 40 pag start ng engine a few seconds mag off na yung oil light sa dash board and medyo tahimik yung makina, but if the oil is SAE 15W40 bakit masmatagal ang pag off yung oil light sa dash board, pero masmalakas naman ng hatak ang SAE 15W40 but medyo maingay ang makina compare it to SAE 40. so any comments on this pwede ko bang lagyan ng oil treatment yung SAE 15W40 to compensate the oil pressure para masmabilis.