All new Protons are filled with 100% coolant in the radiator before they leave the factory.
For best results you should only refill 100% coolant. Do not dilute with distilled water, etc.

There is no need to flush the radiator too often. (Just do it once every 5 years or 60k km whichever comes first)
As a rule of thumb, just flush the radiator when you change the timing belt/water pump.
Btw, you will need many bottles of coolant for this. Around 4-5 bottles I think.

Otherwise, just top up the coolant (if necessary) during the regular scheduled service.

Btw, for engine oil, the best choice is Petronas Syntium 800 10W-40 (Synthetic blend).
This is the engine oil recommended by Proton. It may be slightly thick but it suits the Campro engine.



This post has been edited by Alan Andrews: May 21 2018, 01:29 PM