Bro does changing the hu improve the FM radio clarity? Still got the volume fluctuate?

it's just slightly better than no tint at all. Pretty crappy. I applied another layer of tinted film on top of the original tint. Now it's cool. If not, the aircond compressor non-stop running because it can never reach a resting point as the cabin is so hot, therefore translate into higher fuel consumption.

The main windscreen is most important bro, invest more on the tint at the front windscreen.

i know Iris has this problem. So far it doesn't happen to me though.

Actually it's the opposite. Thicker oil does not gives you better protection. Thinner oil does. Thinner oil flows faster, therefore covers the engine parts faster with the oil film, reducing wear. Thicker oil on the other hand , flows slower. Using thinner oil gives you better engine cranking too . Insist on 5w oil and always fully synthetic.