The majority of original Mazda oil cooler lines installed from the factory are
leaking by now. A quick visual test will show if the oil cooler lines are
wet with oil. Oil leakage is typically from the crimps between the metal
hard line section and the softer rubber hose. It is recommended to replace
these leaking oil cooler lines ASAP. Replacement oil cooler lines are offered
from Racing Beat and Cork Sport.
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