Radiator Lower Tank (In Tank Oil Cooler) Removal Note

WARNING: This page is about a different car, the 2003 Mazda Protege5 and 2003 Mazda Protege. However, it is still accessible from the selected car via links, so may be relevant.

Inspect the height of the header tabs.
Insert the end of a medium tip screwdriver between the end of the header tab and the lower tank.
NOTE:
- Do not open more tabs than necessary for tank removal.
Fig 1: Inspecting Height Of Header Tabs
Courtesy of MAZDA MOTORS CORP.
Pivot the screwdriver to pry the tab away from the tank and repeat the procedure for each tab.
Remove the radiator lower tank and O-ring (gasket) from the core header when all of the tabs are opened.
NOTE:
- If any header tabs are missing from the core, replace the radiator.
Verify that the gasket surface of the radiator core header is clean and free of foreign material or damage.

Fig 2: Removing Radiator Lower Tank And O-Ring (Gasket) From Core Header
Courtesy of MAZDA MOTORS CORP.
Inspect the radiator lower tank for warping.
- If it is warped, replace the radiator tank.