-My car no longer covered by warranty ( I technically void the warranty after 15,000km when I decided to send it to my personal mech rather than to hyundai A.S.C)

-maintenance depend on your mileage

-do oil change n oil filter on 5,000km (ish) sometime slightly higher and I just use semi-syn (7 liter)

-DPF (diesel filter) around rm100, they recommend every 10,000km, I personally extend it to 15,000km ( 1 time every 3 engine oil change)

I used bizol, if not mistaken the labelled in yellow colored

-I'm not sure the bizol engine oil that I used can be categorized as HDEO, but it certainly can be used for starex engine

-after one of my car got engine problem and massive leaks, because the dealer says oil change interval is at 25,000km (something like that), Since then I prefer to do shorter interval engine oil change for all my cars, semi (5,000 -7,500km) fully (10,000-12,000km)