Removing and installing Mazda 3 oil cooler
The oil cooler is non-separable, if it malfunctions or coolant leaks from the seal, we replace it
Preparing the car for the task
Remove the crankcase protection
Draining the coolant
Remove the oil filter
Loosen the inlet hose clamp, slide the clamp along the hose and remove the hose from the oil cooler pipe
We also disconnect the outlet hose from the cooler pipe
Unscrew the bolt securing the oil cooler to the cylinder block bracket and remove the oil cooler
Remove the sealing ring 5 (it needs to be replaced)
Install the oil cooler in reverse order
Fill engine oil
Pour coolant into the engine
Start the engine and check the tightness of the connections
