Repair Procedures: Replacement

Uplift the vehicle with lift.
Drain the manual transaxle oil after loosening the drain plug (A).

Fig 1: Loosen Manual Transaxle Oil Drain Plug
Courtesy of KIA MOTORS AMERICA, INC.
Install the drain plug with new gasket.
Tightening torque:

58.9 ~ 78.5 N.m (6.0 ~ 8.0 kgf.m, 43.4 ~ 57.9 lb-ft)
Loosen the oil filler plug (A).

Fig 2: Locate Manual Transaxle Oil Filler Plug
Courtesy of KIA MOTORS AMERICA, INC.
Add new oil through the filler plug hole and, fill it just below the plug opening.
Standard oil: SAE 75W/85, API GL-4

Oil capacity: 1.9 ~ 2.0 L (0.50 ~ 0.53 U.S.gal., 2.01 ~ 2.11 U.S. qt., 1.67 ~ 1.76 lmp qt.)
Install the oil filler plug.
Tightening torque:

58.9 ~ 78.5 N.m (6.0 ~ 8.0 kgf.m, 43.4 ~ 57.8 lb-ft)