With sir jackaroo's timed post, I was thinking of using the All Terrain oil of Petron. I was using Mobil Delvac for quite a few years since. Pag 10,000kms ako nagpapalit may oil sluge na, pag 8,000kms naman tama lang for oil change. Since medyo malaki ang consumo ng TD42, I will have to switch to a much cheaper price of oil but not in terms of oil quality.