Thank you mga sir for the response!
I ended up in buying the Castrol GTX Diesel 15w40 kasi yun lang available malapit sa Diamond ko. Is it good ba?
Mobil 1000, 2000 at 3000 lang kasi yung ibang andun, even the Mobil TDT and Delvac wala. Saan po ba nakakabili non?
Anyway, I follow the advice given by Sir Zix (as usual

) and sir butchyboy.
I did mineral for the 1k PMS then will go Fully Syn on the 5k PMS. With my own research and point of view, I agree with this.
Total Expense (1st PMS) = Php 2,850
Castrol GTX Diesel 15w40 - Php849/4L x 2 = Php1,698 (Own Oil)
Oil Filter - ..............................................= Php 1043
Etc - .................................................. ....= Php 109
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