Gagaan din ang bulsa mo
Stock mineral oil is better, done that already with my Lancer itlog - mineral oil all the way up to this date and no problem so far. Our Innova has mineral oil when it was delivered to us from casa so why would these SA sell us Synthetic Oil?
I had my Innova switched to Fully Synthetic during my 15KPMS and they just top it with 1 Liter on my 20KPMS and on the 25KPMS the oil was already too dirty in my observation. At this point I decided to switch back to mineral oil and would be better to keep a cleaner engine having a 5K interval change oil.