But one of my friend who own 90HP punto had problems bcoz of using Mobil 1 delvac. so that he can't able to claim EW and finally paid the full service amount. Though many seniors of TFIans use this oil but my friend advised not to use delvac and better opt for costrol EDGE bcoz certain brand who borrow this Engine recommend castrol 5W-40 . According to his surf, Mobil 1 delvac fail to handle high temperature of the engine during long continuous and tough journey . I agree with him bcoz he faced problems in reality .