LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2021 >> CX-3 FWD >> Repair and Diagnosis >> Engine Mechanical >> Engine Lubrication System >> Oil Cooler Removal/Installation >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Oil Cooler Removal/Installation: Notes

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.
  1. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
  2. Remove the front under cover No. 2. (See FRONT UNDER COVER NO. 2 REMOVAL/INSTALLATION .)
  3. Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
  4. Remove in the order indicated in the table.
  5. Use a clean rag to wipe off the mounting surface on the oil filter body and the oil cooler.
  6. Install in the reverse order of the removal.
  7. Refill the engine coolant. (See ENGINE COOLANT REPLACEMENT .)
  8. Start the engine and confirm that there is no oil leakage.
    • If there is oil leakage, repair or replace the applicable part.
  9. Inspect the oil level. (See ENGINE OIL LEVEL INSPECTION .)
  10. Inspect for engine coolant leakage. (See ENGINE COOLANT LEAKAGE INSPECTION .)
Fig 1: Oil Cooler Components With Torque Specification
G13149301Courtesy of MAZDA MOTORS CORP.
COMPONENT DESCRIPTION

1 Water hose
2 Oil cooler
(See Oil Cooler Installation Note .)
3 Gasket
(See Gasket Installation Note .)