believe it or not, i ever snatched the bottle from the mech whn i kept telling him not to fill all 4L..... he just kept quiet.

For window auto, just press the button lower to the bottom until you hear or feel a click, it will go auto. No auto up tho.

The sound of window, you did not mention what sound, knocking, creaking, windsound, etc. So many possible cause.

3 days already speed kah...should not go over 100km/h for 1st 1K to run in the engine.

Everything still new mah....even human if never run, ask to suddenly run, sure kena muscle strain wan. All your car mechanical comp still new. Give it some time before running it fast.

Some more there's metal particles left in engine after manufacturing. High speed, oil get thinner...not so good for those particles vs piston (I only guessing here). Wait till change oil at 1K only run at high rpm.

As for possible damage if did not do run in......depends on luck. Likely nothing happen but it just increase chances of possible damage or faster wear and tear (might not see it now until years later). Don't worry too much since its done.

Tighten the wiper nut, it is probably loose. Try taking the wiper to work at full speed, and see if it hits on your A-pillar or not. If it does, adjust the wiper and tighten the nut. If you don't know what you're doing, send back to SC to get the job done.

Castrol Magnatec 10W-40 FTW.
3/4 of 4 liter mana cukup. 3 liters only meh.
Just stick to the manual suggestion. No magnacrap. 

By theory, yes warranty will void. In reality, normally would not void warranty. They normally just ignore it coz most problems not related to engine lubrication. Lots of ppl doing it. However if something really happened to your engine, this will give them bullet to shoot you and say void warranty but that rarely happens.

As for engine oil, SAE SL (don't use SJ, a bit too old in requirement). ML is even better. Oil viscosity should be W40 or W50. Nowadays, CoSE using Syn 800 Semi Syn 10W40, so W40 is definitely more recommended vs the original W50. The front (ie 10 numbers) can be anything from 5 to 20 as its cold weather viscosity that normally makes not much difference with our weather. As listed in manual 10W40 to 20W50 can be used.

3 days since i got my PE, mileage already 200KM++ ... estimate might reach 1000km in 2 weeks only. Is it OK to reach 1000km so soon ? Need to service so soon ?