The oil cooler adapter gasket connects the engine oil lines to the oil cooler and allows cooled oil to return to the oil pan. A failure of this gasket can allow engine oil or coolant to leak externally or contaminate the other fluid internally. Symptoms of an oil cooler adapter gasket failure include puddles of oil or coolant found under the car, oil present in the coolant system, or coolant in the oil pan. If any of these signs are noticed, the gasket has likely failed and needs to be replaced while flushing the contaminated fluids from the engine.

1. Symptoms of Oil Cooler
Adapter Gasket Failure in
Cars

2. The oil cooler adapter gasket on any vehicle is
an essential engine component designed to keep
modern cars running smoothly.

3. The purpose of the engine oil cooler is to allow
the engine’s cooling system to remove excess heat
from the oil.

4. In most of the cars, engine oil is fed to the
oil coolers from an adapter that is located
between the engine block and the engine oil
filter.

5. If the car is serviced regularly, including
routine oil and filter changes, the oil cooler
should last as long as the car's engine or other
major mechanical parts.

6. However, there are certain occasions when the oil
cooler begins to wear out and may ultimately
fail. Here are the symptoms shown by the oil
cooler when it fails.

8. One of the components that is part of the oil cooling
system is the oil cooler adapter, which connects oil lines
to the cooler itself and another adapter sends cooled oil
back into the oil pan.

9. Inside the adapter there is a gasket or rubber o-ring
and if the oil cooler adapter falls externally, engine
oil may be forced out of the engine.

10. However, if the leakage is small, you will notice a
puddle of engine oil on the ground beneath your car or
possibly a stream of oil on the ground behind your

12. Similar to the loss of oil, an external oil
cooler gasket failure may force all the engine
coolant out of the engine.

13. Whether the coolant leak is small or large, you
will come across coolant puddling on the ground
underneath your car.

14. If your car has a small leak, then you will notice coolant
puddling on the ground and if the leak is a big one, you will
notice steam pouring out from under the hood of your car.

16. If the oil cooler adapter fails internally, you
may notice engine oil in your cooling system.
This happens because when the engine is running,
oil pressure is greater than cooling system
pressure.

17. This eventually leads to a lack of lubrication
and can severely damage the engine.

19. When the engine is not running and the cooling
system is pressurized, the coolant can be forced
from the cooling system into the oil pan.

20. The high oil pan levels can damage the engine by
the crankshaft slapping the oil as it rotates.

22. If you come across any of these symptoms, then it
can be said that the oil cooler adapter gasket
has malfunctioned.

23. You need to flush the engine and the coolant
system to remove all the contaminants and also
the oil cooler adapter gasket needs to be

24. THANK YOU!