Manual Transaxle Oil Replacement

Park the vehicle on level ground.
Remove the front under cover No. 2. (See FRONT UNDER COVER NO. 2 REMOVAL/INSTALLATION .)
Remove the drain plug and gasket, and drain the manual transaxle oil.
Install a new gasket and the drain plug.
Tightening torque 39-59 N.m {4.0-6.0 kgf.m, 29-43 ft.lbf}

Fig 1: Identifying Drain Plug And Gasket
Courtesy of MAZDA MOTORS CORP.
Remove the oil level plug and gasket.
Add the specified manual transaxle oil through the oil level plug port.
Manual transaxle oil grade API service GL-4

Manual transaxle oil viscosity SAE 75W-80

Manual transaxle oil capacity (approx. quantity) 1.70 L {1.80 US qt, 1.50 Imp qt}
Install a new gasket and the oil level plug.
Tightening torque 39-59 N.m {4.0-6.0 kgf.m, 29-43 ft.lbf}

Fig 2: Identifying High And Low Level Of Manual Transaxle Oil
Courtesy of MAZDA MOTORS CORP.
Install the front under cover No. 2. (See FRONT UNDER COVER NO. 2 REMOVAL/INSTALLATION .)