Warning
Caution
1. Position the vehicle on level ground.
2. Remove the oil filler cap and the oil pan drain plug and oil filter drain.
3. Drain the engine oil into a container.
4. Install the oil filter drain plug with the new O-ring.
Tightening torque (oil filter drain plug): 9-10 N·m {91.8-101.9 kgf·cm, 79.7-88.4 in·lbf}
5. Clean the flange surface (seal rubber) of the oil pan drain plug, then install the oil pan drain plug.
Tightening torque (oil pan drain plug): 25-30 N·m {2.6-3.0 kgf·m, 18.8-21.6 ft·lbf}
Note
6. Refill the engine with the specified type and amount of engine oil.
Oil capacity (Approximate quantity)
L {US qt, Imp qt}

Note
Recommended engine oil

7. Refit the oil filler cap.
8. Run the engine and inspect for oil leakage.
9. Inspect the oil level.
10. Start the engine and inspect for oil leakage.
Engine oil inspection
Oil filterMazda 6 Service Manual: Compression pressure
COMPRESSION INSPECTION
Warning
Hot engines and oil can cause severe burns. Be careful not to burn
yourself during removal/installation of each component.
1. Verify that the battery is fully charged.
Recharge it if necessary. (See BATTERY INSPECTION.)
2. Warm up the engine to the no ...
Mazda 6 Service Manual: Front oil seal
FRONT OIL SEAL REPLACEMENT
1. Disconnect the negative battery cable.
2. Remove the spark plugs. (See SPARK PLUG REMOVAL/INSTALLATION.)
3. Remove the Cylinder head cover. (See Cylinder Head Cover Installation
Note.)
4. Remove the drive belt. (See DRIVE BELT REPLACEMENT.)
5. Remove the front dr ...