Oil Cooler Flushing: Notes

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The contaminated cooler line (oil pipes and hoses) and auxiliary cooler must be flushed completely when ATX is overhauled or replaced.

Remove the two oil cooler line hoses and apply air pressure of 196 kPa {2.0 kgf/cm ² , 28 psi} from the return hose (pipe) side.
CAUTION:
- Power flushing should be performed very carefully when removing the accumulated debris from the fluid baffle, otherwise the debris cannot be removed or the problem becomes even worse.
Fig 1: Removing Two Oil Cooler Line Hoses
Courtesy of MAZDA MOTORS CORP.

If there is no air blown out the feed side, flush the oil cooler lines using the power-flushing tool. (See POWER FLUSHING )

RECOMMENDED POWER-FLUSHING MANUFACTURER

Manufacturer	Part number	Description
Kent Moore	J35944-AMAZ	Flushing kit or equivalent
OTC	60081	Portable torque converter, oil cooler cleaner or equivalent

If there is ventilation, carry out the following steps.
1. Remove the oil pan and inspect the fluid filter element from the front filter.
  
  Fig 2: Identifying Fluid Filter Element
  Courtesy of MAZDA MOTORS CORP.
2. If the element is covered with too much debris or particles and cannot be seen, replace the oil cooler. (See OIL COOLER REMOVAL/INSTALLATION .) (See OIL COOLER DISASSEMBLY/ASSEMBLY .)
3. If the element can be seen, flush the oil cooler lines using the power-flushing tool.
  - Performing back and reverse power flushing two times each does not work because debris or particles flow out from the feed pipe side of ATX.