Think the key message is don't get fake oil.

But if you insist a brand recommendation, you can consider these, which I have personally used:
a) Magnetec (I find it don't play nice with Liqui Moly MoS2 additive, white flake tend to form)
b) Shell semi, blue bottle one (quite sound, but a lot of fakes. Better get from trusted garage or petrol station)
c) Idemitsu works fine for me currently, blended with LM MoS2 additive.

The key point is don't use fake oil, don't overfill (I keep the level middle of max and min oil indicator), and change it every 5,000 km (this is personal preference. I tend to stick to manufacturers recommendation)

Reference: Clocking of 310,000km plus on my 2011 Persona Elegance.

Zordaq posted their customer's car...

Err.. I don't really have anything that's systematically arranged.

So far all my cryptic issues are electronics problem:

-Check Engine Light with knock sensor voltage too low probably due to I tried heel-toe downshiftbon my car.. Once i drive like an Ah Pek then the code won't come back, after clear error code.

-If your oxygen sensor failed: You go to spare part shop they'll give you black color Gen2 O2 sensor. That's not the right one. Insist O2 sensor with green cable. Otherwise you going to be like me who bought 3 black O2 sensor until I gave up and send my car back to Proton Edar.

-Most of the unexplained electronics problem occurs when car battery about to die. If you got strange problem that your wireman cannot diagnose, at the same time battery due to be changed already, you can always try new battery when all method exhausted.

Engine bay there basically nothing much. Just make sure you maintain according to schedule lo... Use distilled water for coolant mix, use original timing belt assembly (zordaq keep on highlight this in their FB page), change water pump at alternate timing belt change, solve crankcase cover gasket oil leak by replacing the gasket with silicone punya, etc etc.

Getting a OBD2 Bluetooth reader is a good investment. I got one Scantool.net bluetooth version in my drive so that I know what's the CEL for..