LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2018 >> CX-9 Signature >> Repair and Diagnosis >> Engine Mechanical >> Engine Lubrication System >> Engine Oil Replacement
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Engine Oil Replacement

WARNING:
  • Hot engines and engine oil can cause severe burns. Turn off the engine and wait until it and the engine oil have cooled.
  • A vehicle that is lifted but not securely supported on safety stands is dangerous. It can slip or fall, causing death or serious injury. Never work around or under a lifted vehicle if it is not securely supported on safety stands.
  • Continuous exposure to USED engine oil has caused skin cancer in laboratory mice. Protect your skin by washing with soap and water immediately after working with engine oil.
CAUTION:
  • If engine oil is spilled on the exhaust system, wipe it off completely. If you fail to wipe the spilled engine oil, it will produce fumes because of the heat.
  1. Position the vehicle on level ground.
  2. Remove the oil filler cap.
  3. Remove the service hole cover (installed to front under cover No. 2) used to drain the engine oil.
    Fig 1: Service Hole Cover, Screws And Fasteners
    G11436464Courtesy of MAZDA MOTORS CORP.
  4. Remove the oil pan drain plug.
  5. Drain the engine oil into a container.
  6. Install the oil pan drain plug with a new gasket.

    Oil pan drain plug tightening torque

    30-41 N.m {3.1-4.1 kgf.m, 23-30 ft.lbf}

    NOTE:
    • The amount of residual oil in the engine can vary according to factors such as the replacement method and oil temperature. Verify the oil level after engine oil replacement.
  7. Refill with the following type and amount of engine oil.
    ENGINE OIL SPECIFICATION

    Item U.S.A., Canada And Puerto Rico Except U.S.A., Canada And Puerto Rico
    Engine oil grade
    G12244178Courtesy of MAZDA MOTORS CORP.
    G12244179Courtesy of MAZDA MOTORS CORP.

    API SM/SN or ILSAC
    Engine oil viscosity 5W-30 5W-30 (If SAE 5W-30 engine oil is not available, use SAE 0W-30 or SAE 10W-30 engine oil.)

    Engine oil capacity (approx. quantity) 

    Oil replacement: 4.6 L {4.9 US qt, 4.0 lmp qt}

    Oil and oil filter replacement: 4.8 L {5.1 US qt, 4.2 lmp qt}

    Total (dry engine) : 5.9 L {6.2 US qt, 5.2 Lmp qt}

  8. Install the oil filler cap.
  9. Start the engine and confirm that there is no oil leakage.
    • If there is oil leakage, repair or replace the applicable part.
  10. Inspect the oil level. (See Engine Oil Level Inspection .)
  11. Install the service hole cover.
  12. If the engine oil is replaced, perform "engine oil data reset". (See Engine Oil Data Reset .)
scientia non olet · About LEMON Manuals