Hi bros, Thats why I'm asking opinion here. Hehe. Well basically I'm looking to have better cornering ability and smoother ride when going over uneven roads and bumps. The front is ok. But the back is kind of harsh over small bumps.

Actually the stock ground clearance shouldnt have any issues over bumps. The clearance is already higher than normal sedan. Also if I lowered the car, I will change to 17".

Btw I'm using a different login incase ur wondering. Hehe.

Oh btw, proton already send letter to every SC to send one foreman each to train on how to replace the radiator head for EB. We will have recall in the near future  but only change the radiator head not the whole radiator assembly. It still fix the issue 

based on the chart, isnt it 60k service is rm378?
120k service is rm936

nissan's service looks cheaper because its 5k interval

labour is included (see quantity of hours. 60k is 2 hours so rm120)

As for the car alignment slightly to left, I would say go to SC ASAP as when mileage higher, they might not do free alignment for you anymore (thats what my encounter too but I check when mileage almost 1K and they said need to be charge, >500 should be still cover).

From our manual book, reccomended 10W-30 but never stated Mineral, Semi or fuly. Its still my doubt choosing the engine oil but my 1K service was using Mobil 10W-40 semi, would try out 10W-30 mineral on 10K as its under the total free service LOL.

s for4 the spark plug, its only need to be change @ 60K or 100K, need not worry too early while the price for a set around RM400 as its not normal type, from other owner experience.

Sometime it's not bad allignment, just the steering need to adjust.