Which specification does Automatic transmission fluid (ATF) need for the Kia Optima 2.0 CVVL (2016–2018)?

Automatic transmission fluid (ATF) for the Kia Optima 2.0 CVVL (2016–2018): Dexron VI, JASO 1A.

Which specification does Axle & differential oil need for the Kia Optima 2.0 CVVL (2016–2018)?

Axle & differential oil for the Kia Optima 2.0 CVVL (2016–2018): 70W-75, API GL4.

Which specification does Brake fluid need for the Kia Optima 2.0 CVVL (2016–2018)?

Brake fluid for the Kia Optima 2.0 CVVL (2016–2018): DOT 3, FMVSS 116 DOT 3.

Suitable for Kia Optima 2.0 CVVL (2016–2018)

For the Kia Optima 2.0 CVVL (2016–2018), the manufacturer specifies motor oil 0W-30 (ACEA A5, ACEA B5, ACEA C3), 0W-40 (ACEA A3, ACEA B4, ACEA C3), 5W-20 (ACEA C5, API SN, API SQ), 5W-30 (ACEA A3, ACEA B4, ACEA C2), or 5W-40 (ACEA A3, ACEA B4, ACEA C3).

Fluids and approvals for the Kia Optima 2.0 CVVL (2016–2018)

Fluid	Requirement
Motor oil	0W-30: ACEA A5, ACEA B5, ACEA C30W-40: ACEA A3, ACEA B4, ACEA C35W-20: ACEA C5, API SN, API SQ5W-30: ACEA A3, ACEA B4, ACEA C25W-40: ACEA A3, ACEA B4, ACEA C3
Automatic transmission fluid (ATF)	Dexron VI, JASO 1A
Axle & differential oil	70W-75, API GL4
Brake fluid	DOT 3, FMVSS 116 DOT 3