Hello noob car owner here and car is Elantra 2011 (1.8L AT variant).

I had my car checked and according to the mechanic it needs to have the ff changed: Engine Oil, Automatic Transmission Fluid, Drive Belt and Spark Plugs.

Question #1:
- Ok po ba Aisin engine oil and ATF? Saw these in Lazada:
5W-30 full synthetic oil https://bit.ly/2UVVzYa
4L full synthetic ATF https://bit.ly/2CC2M8Z

Question #2:
- Any idea kung ano oil filter niya? Cartridge o element type? What size?

Question #3:
- Is it true that only 4L is required for ATF change? Manual says AT is 7.3L pero sabi ng mechanic 4L lang?

Question #4:
- San po kaya makakabili ng murang iridium spark plugs in Banawe?

Thanks po sa sasagot!