Oil leak from head gasket can it be replaced - 2006 Scion tC

look at head area hopefully its the valve cover gasket worst is improper head gasket

It leaks what... coolant or exhaust gas?
If it's exhaust gases it's more likely to be the exhaust manifold gasket at fault.

If it's coolant leaking out somewhere it could be a hose/radiator/coolant tank, though coolant can also leak from the head gasket area.

A classic sign of a leaking head gasket is a creamy white/grey sludge on your oil dipstick. This is caused by coolant finding its way via a blown head gasket into the oil system

A creamy sludge on the dipstick - caused by coolant finding its way into the oil system because of a leaking head gasket.

Other indications of a leaking head gasket/head is overheating and rough running.

You can also try removing the cap from the coolant bottle and letting the engine idle. If bubbles continually appear this may be due to the exhaust gases finding their way into the cooling system via a leaking head gasket.

In most cases replacing a head gasket requires the cylinder head to be skimmed as well. This is because the alloy of the head tends to warp slightly.

A workshop would be able to diagnose a faulty head gasket within minutes. Having a head gasket replaced and the head skimmed isn't a cheap job.

Nowadays there are 'guaranteed head repair' additives available. Just follow the instructions on the can if you decide to use one. I personally haven't used such an additive.

This is common issue early sign head gaskets failure for EJ251 SOHC engine for external coolant leak. Second gen 96-99 with EJ25D is worst because when head gaskets failed, it's an internal leak that allows coolant and oil mix together in the combustion chamber to destroy engine.
You can drive it for at least 6 months or more as long as you keep top up coolant since the leak should be small at a slower rate leak. I drove mine for a while before change head gaskets. You're looking at `$1000-1200 job a dealership since you might as well change the timing belt, water pump, idlers while engine is pulled to replace head gaskets.

For leaking head gasket it has to be replaced. For head gasket leaking and other troubleshooting, there are help links provided. Its suggested to click the link below and go through the troubleshooting procedure to confirm the issue :-----Leaking head gaskets? http://schematicsdiagram.blogspot.com/2011/12/leaking-head-gaskets.html
-----------Water in engine oil? http://schematicsdiagram.blogspot.com/2011/12/water-in-engine-oil.html
-----------How to replace head gasket on car?http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-head-gasket-on-1994.html-------------How to know what is faulty Cylinder head or Head gasket?http://schematicsdiagram.blogspot.com/2011/12/how-to-know-what-is-faulty-cylinder.html
-------------- Can I just replace Head Gasket on 1991 Buick Century?http://schematicsdiagram.blogspot.com/2011/12/can-i-just-replace-head-gasket-on-1991.html Location of Head Gasket ?

http://schematicsdiagram.blogspot.com/2011/12/location-of-head-gasket-on-1994-grand.html

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HOW TO REPLACE A HEAD GASKET

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-head-gasket.html

----------------
How to replace Exhaust Manifold?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-exhaust-manifold-on.html

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How to replace Intake Manifold?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-intake-manifold-on-acura.html

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How to replace Cylinder Head ?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-cylinder-head-on-acura.html

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Is it Easy to replace head gasket?

http://schematicsdiagram.blogspot.com/2011/12/is-it-easy-to-replace-head-gasket-on.html

------------
Should I only replace head gaskets or complete head gasket assembly?http://schematicsdiagram.blogspot.com/2011/12/should-i-only-replace-head-gaskets-or.html

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This will help. Thanks.

For leaking head gasket it has to be replaced.For head gasket leaking and other troubleshooting,there are help links provided.Its suggested to click the link below and go through the troubleshooting procedure to confirm the issue :-----Leaking head gaskets? http://schematicsdiagram.blogspot.com/2011/12/leaking-head-gaskets.html
-----------Water in engine oil? http://schematicsdiagram.blogspot.com/2011/12/water-in-engine-oil.html
-----------How to replace head gasket on car?http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-head-gasket-on-1994.html-------------How to know what is faulty Cylinder head or Head gasket?http://schematicsdiagram.blogspot.com/2011/12/how-to-know-what-is-faulty-cylinder.html
-------------- Can I just replace Head Gasket on 1991 Buick Century?http://schematicsdiagram.blogspot.com/2011/12/can-i-just-replace-head-gasket-on-1991.html Location of Head Gasket ?

http://schematicsdiagram.blogspot.com/2011/12/location-of-head-gasket-on-1994-grand.html

------------------------
HOW TO REPLACE A HEAD GASKET

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-head-gasket.html

----------------
How to replace Exhaust Manifold?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-exhaust-manifold-on.html

-------------------
How to replace Intake Manifold?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-intake-manifold-on-acura.html

---------------
How to replace Cylinder Head ?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-cylinder-head-on-acura.html

---------
Is it Easy to replace head gasket?

http://schematicsdiagram.blogspot.com/2011/12/is-it-easy-to-replace-head-gasket-on.html

------------
Should I only replace head gaskets or complete head gasket assembly?http://schematicsdiagram.blogspot.com/2011/12/should-i-only-replace-head-gaskets-or.html
-----------FOR oil leak issue check the following help links:---Common Causes of Car Oil Leaks? http://schematicsdiagram.blogspot.com/2011/12/common-causes-of-car-oil-leaks.html --------Troubleshoot Car Oil leak?http://schematicsdiagram.blogspot.com/2011/12/troubleshoot-car-oil-leak.html
---------Car oil leak?

http://schematicsdiagram.blogspot.com/2011/12/car-oil-leak.html

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Car oil leaks from valve cover gasket?http://schematicsdiagram.blogspot.com/2011/12/car-oil-leaks-from-valve-cover-gasket.html
---------This will help.Thanks.

For leaking head gasket it has to be replaced.For head gasket leaking and other troubleshooting,there are help links provided.Its suggested to click the link below and go through the troubleshooting procedure to confirm the issue :-----Leaking head gaskets? http://schematicsdiagram.blogspot.com/2011/12/leaking-head-gaskets.html
-----------Water in engine oil? http://schematicsdiagram.blogspot.com/2011/12/water-in-engine-oil.html
-----------How to replace head gasket on car?http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-head-gasket-on-1994.html-------------How to know what is faulty Cylinder head or Head gasket?http://schematicsdiagram.blogspot.com/2011/12/how-to-know-what-is-faulty-cylinder.html
-------------- Can I just replace Head Gasket on 1991 Buick Century?http://schematicsdiagram.blogspot.com/2011/12/can-i-just-replace-head-gasket-on-1991.html Location of Head Gasket ?

http://schematicsdiagram.blogspot.com/2011/12/location-of-head-gasket-on-1994-grand.html

------------------------
HOW TO REPLACE A HEAD GASKET

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-head-gasket.html

----------------
How to replace Exhaust Manifold?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-exhaust-manifold-on.html

-------------------
How to replace Intake Manifold?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-intake-manifold-on-acura.html

---------------
How to replace Cylinder Head ?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-cylinder-head-on-acura.html

---------
Is it Easy to replace head gasket?

http://schematicsdiagram.blogspot.com/2011/12/is-it-easy-to-replace-head-gasket-on.html

------------
Should I only replace head gaskets or complete head gasket assembly?http://schematicsdiagram.blogspot.com/2011/12/should-i-only-replace-head-gaskets-or.html

---------This will help.Thanks.

For leaking head gasket it has to be replaced.For head gasket leaking and other troubleshooting,there are help links provided.Its suggested to click the link below and go through the troubleshooting procedure to confirm the issue :-----

Leaking head gaskets?

http://schematicsdiagram.blogspot.com/2011/12/leaking-head-gaskets.html
-----------Water in engine oil? http://schematicsdiagram.blogspot.com/2011/12/water-in-engine-oil.html
-----------How to replace head gasket on car?

http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-head-gasket-on-1994.html-------------

How to know what is faulty Cylinder head or Head gasket?

http://schematicsdiagram.blogspot.com/2011/12/how-to-know-what-is-faulty-cylinder.html
--------------

Can I just replace Head Gasket on 1991 Buick Century?

http://schematicsdiagram.blogspot.com/2011/12/can-i-just-replace-head-gasket-on-1991.html

-----------

Location of Head Gasket ?

http://schematicsdiagram.blogspot.com/2011/12/location-of-head-gasket-on-1994-grand.html

------------------------
HOW TO REPLACE A HEAD GASKET

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-head-gasket.html

----------------
How to replace Exhaust Manifold?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-exhaust-manifold-on.html

-------------------
How to replace Intake Manifold?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-intake-manifold-on-acura.html

---------------
How to replace Cylinder Head ?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-cylinder-head-on-acura.html

---------
Is it Easy to replace head gasket?

http://schematicsdiagram.blogspot.com/2011/12/is-it-easy-to-replace-head-gasket-on.html

------------
Should I only replace head gaskets or complete head gasket assembly?

http://schematicsdiagram.blogspot.com/2011/12/should-i-only-replace-head-gaskets-or.html

---------This will help.Thanks.

This is caused by a leaking head gasket. When a head gasket leaks you can get oil in the coolant or coolant in the oil of the engine or both. You will need to pull the cylinder head off, have it checked for cracks and if none are found have it machined flat again and replace the head gasket. Use only a quality head gasket set either from the Toyota dealer or a well known quality brand like Fel-Pro (available from NAPA and others). This is a job that requires some special tools and a great deal of car repair knowledge, time to do the job is about 6 hours.

dear friend-i do not think the oil comes from the hear gasket but rather from the distributor,make sure that the oil is not running down onto the head gasket and the shows as a oil leak from the gasket.

If there is oil inside the coolant liquid that is the head gasket.

Check first if oil can leak into the coolant tank from the cap.

Usually when you get oil into the coolant liquid you have an head gasket problem, do a compression test, or buy the home tester below.

eBay.co.uk Guides - HOW TO TEST FOR A FAILED HEAD GASKET
Head Gasket or Combustion Leak Test Procedure (Gasoline Engines Only)
Blown Head Gasket? how to check