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Oil leak cooler - 2003 Volkswagen Jetta TDI

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Oil cooler leak


I do not really see the problem here. If you found the leak then it is pretty easy to fix. I do not know if the oil cooler seal is available separately. Most of the time the Mazda dealer only sells the seal with the oil cooler and that is pretty expensive.

Jan 12, 2014 | 2006 Mazda 5

1 Answer

My 2000 Jetta 2.0 is visibly leaking oil from above the oil cooler when the engine is running. Is it most likely the seal or could there be something else above the cooler that could be leaking?


let car cool down clean oil cooler make sure no oil visible. start engine keep looking see were oil is leaking from use torch or lamp if nessesary

Aug 02, 2011 | 1998 Volkswagen Jetta

1 Answer

97 vw golf 1.8 there is a squar box where oil filter fastens to. oil is leaking from top of this box. what is this box and how i fix the leak?


The box is the oil cooler. The oil is most likely leaking from the oil cooler seal. The oil cooler is the square aluminum piece that the oil filter screws onto. To replace the seal, remove the filter, remove both coolant hoses that attach to the cooler, remove the nut that secures the cooler to the block and slide the cooler off the tube. Replace the rubber o-ring seal which is available at the VW dealer. It's inexpensive. Replace everything in reverse order. Good luck

Jan 05, 2011 | Volkswagen Golf Cars & Trucks

1 Answer

Oil leaks pour from my Oil cooler right above oil filter when I start driving


The oil is most likely leaking from the oil cooler seal. The oil cooler is the square aluminum piece that the oil filter screws onto. To replace the seal, remove the filter, remove both coolant hoses that attach to the cooler, remove the nut that secures the cooler to the block and slide the cooler off the tube. Replace the rubber o-ring seal which is available at the VW dealer. It's inexpensive. Replace everything in reverse order. Good luck

Jan 03, 2011 | 1997 Volkswagen Jetta

2 Answers

How do i repair oil filter housing leak?


The oil is most likely leaking from the oil cooler seal. The oil cooler is the square aluminum piece that the oil filter screws onto. To replace the seal, remove the filter, remove both coolant hoses that attach to the cooler, remove the nut that secures the cooler to the block and slide the cooler off the tube. Replace the rubber o-ring seal which is available at the VW dealer. It's inexpensive. Replace everything in reverse order. Good luck!

Dec 28, 2010 | 1997 Volkswagen Jetta

1 Answer

Replace oil cooler line leaking


CHECK TO MAKE SURE LINE IS TIGHT IF SO REPLACE THE OIL COOLER LINE ITS LEAKING.

Apr 16, 2010 | 2003 Chevrolet Blazer

1 Answer

My car is a volkswagen passat diesel .there is oil in the coolant i was first told the head gasket had blowen. i have also been told it could be the oil cooler. the car is not over heating in fact the...


There is a very easy way to check the oil cooler for leaks.

Do this with the engine cool and be prepared to catch some coolant in a pan.

Remove the 2 coolant hoses from the oil cooler and attach them together using a 5/8 inch straight heater hose connector. You are bypassing the oil cooler temporarily. Wipe the oil cooler clean so you can clearly see any leaks develop.

Now run the engine and watch the oil cooler pipes (the ones you just removed the hoses from) carefully. If you begin to see oil seeping from the cooler pipes you've found your problem.

This might take a while to see so be patient and let the car run for at least 15 mins or more.

Don't worry about the cooler being disconnected while the car is running, but I do recommend reconnecting the cooler if you have to drive it even if you find it to be leaking.

If it is found to be leaking, you will need to replace the part and have your coolant flushed out properly to remove as much of the oil as possible from the system. Also change the engine oil at the same time, it is possible that coolant has gotten into the oil although it may not be obvious.

Good luck.

Jan 31, 2010 | 2001 Volkswagen Passat

3 Answers

Oil in water resovour vw 2002 passat


Could be just the OIL COOLER. VW IS CORRECT.
If the oil cooloer fails internely you will have a mix of coolant and oil. In the engine and in the Radiator,

But not to say the other guys were wrong...

May 27, 2009 | 2003 Volkswagen Passat

3 Answers

Oil in water resovour vw 2002 passat


This is probably a head gasket problem and not an oil cooler problem.

The oil cooler is fairly easy to test.

Remove the cooler from the engine but do not disconnect cooling lines and then pressurize the cooling system. You can use a radiator test tool to put pressure on the cooling system and look for leaks. If it leaks, replace it.

You may also be able to bypass the oil cooler altogether if it leaks.

The head gasket is another story.

Get a 1/4" pipe to spark plug fitting and put a male air coupling fitting in it.

Then you can charge the cylinders with air from your compressor.

Make sure each cylinder that you test is at top dead center so that the valves are closed.

If air bubbles into your coolant, you found your problem.

If air leaks out your intake you have a bad intake valve

If air leaks out your exhaust you have a bad exhaust valve etc.


If you find this useful, please take the time to rate it.

Tim

Apr 15, 2009 | Volkswagen Passat Cars & Trucks

1 Answer

2003 Nissan Pathfinder


Oil cooler o-ring.
http://www.nissanpathfinders.net/forum/topic/25463-engine-oil-cooler-leaking-oil/
Not all coolers look like radiators. I wouldn't think it should cost that much. Try somewhere else.

May 01, 2017 | 2003 Nissan Pathfinder

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