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Gearbox oil in the radiator - Bosch 1995 - 1998 Audi A6 Quattro A/C Servo W0133-1608903 Right Audi

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You have a failed oil cooler core in the radiator. You have 2 options 1 is to replace the radiator---completely flushing the cooling system and 2 is to flush out the cooling system --plug off the hose fittings to the radiator and install an after market air cooled oil cooler in front of the radiator. Either way you have to ensure that there is no trace of oil in the engine cooling system and no trace of coolant in the automatic transmission

Posted on May 04, 2013

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Why is gearbox oil getting into rhe radiator on my jeep grand cherokee 2003


it is probably not gearbox oil. it is probably transmission fluid because it travels through the radiator cooling tanks. the cooling tanks may have a leak causeing the fluids to leak into the radiator.

Aug 30, 2012 | 2003 Jeep Grand Cherokee

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Hi, i have automatic passat 1999 model and recently water happens to get into the gear box and it control board, i experiences a boom sound anytime the gear is changed, the oil has been changed by the...


If no external leak and the transmission fluid colour looks white, the problem belongs to the automatic gearbox oil cooler. The oil cooler has broke mixing the gearbox oil and coolant causing this milkshake. It's a small radiator core type oil / water heat exchanger. It is cracked inside and transmission oil is mixed with engine coolant. Because the transmission oil pressure is greater than engine coolant pressure, the transmission fluid level drops. See also the coolant colour inside recovery coolant reservoir inder bonnet! It could be like this:

tdisline_495.jpg
The automatic gearbox oil cooler type oil / water heat exchanger (oil cooler):

tdisline_496.jpg
In the picture above the transmission oil pan was removed for oil filter replacement.

May 05, 2011 | 1999 Volkswagen Passat

1 Answer

Transmission fluid level need regular top up and there is no external leak.Fluid color looks white.


If no external leak and the transmission fluid colour looks white, the problem belongs to the automatic gearbox oil cooler. The oil cooler has broke mixing the gearbox oil and coolant causing this milkshake. It's a small radiator core type oil / water heat exchanger. It is cracked inside and transmission oil is mixed with engine coolant. Because the transmission oil pressure is greater than engine coolant pressure, the transmission fluid level drops. See also the coolant colour inside recovery coolant reservoir inder bonnet! It could be like this:

9d86426.jpg

The automatic gearbox oil cooler type oil / water heat exchanger (oil cooler):

138b4e6.jpg
(In the picture above the transmission oil pan was removed for oil filter replacement).

Oct 29, 2010 | 2005 Audi A4

2 Answers

Replace radiator


easy job considering ,i done one a while back but the cost of the radiator was astronomical just over 500 euros ,remove the fan on the back of the radiator ,the top piece of metal over the top of the radiator ,and comes out but the problem i had was with the hoses as they have a sort of push in clamp ,also the oil cooler feed pipes from the auto box and the engine oil cooler pipes ,now the engine oil cooler connections were just screw on but the gearbox cooler pipes have a special plastic retaining clips and these broke on me and the only way i could repair them was to buy new ones which come with the whole pipe from the gearbox and they were very expensive indeed ,also their are a few different versions as well ,all this because of a silly plastic clip .Also i had to unbolt the AC radiator from the main radiator as well .but the hardest part was the gearbox cooler pipes

Sep 06, 2010 | 1998 Jeep Grand Cherokee

1 Answer

On a 2.5 range rover does the coolant and gearbox oil flow through the one radiator


No the coolant radiator is a sealed system, oil and water do not mix; as far as I am aware manual gearboxes do not have coolers.

If you have oil in your coolant water this will be an engine problem. Check the engine oil is not frothy and caramel coloured.

If your gear box oil is is a brown colour or dirty looking, this is due to water ingress, either through the breather hose or seals, try changing the fluid. If you can check the seals and breaher hose.

Suggest you get a owners manual and Haynes or workshop manual.
There are plenty of free files on line, do a search on Google, Alltheweb, Lycos, etc

Sep 11, 2009 | 1995 Land Rover Range Rover

2 Answers

HOW DO I CHECK MY VW CITI COLF GEARBOX OIL LEVEL? 1.8 - 5speed


about halfway down the gearbox facing the radiator is an allen key take this off oil should come out if not top it up

Jul 12, 2009 | 2003 Volkswagen Golf

1 Answer

Water in gearbox and oil in radiator 1997 ktm trail bike


marzy306,

Your problem is coming from the waterpump seal. When the seal goes bad it lets oil from the crankcase into the waterpump and vise versa. The only other problem it could be is the head gasket but you would feel a loss of power.

Jun 19, 2009 | 1997 KTM Duke

1 Answer

What is the cooling agent used for the transmistion cooling? is it oil? There is an oil type substance coming from the radiator area.


The transmission cooler is mounted either in front of the coolant radiator or it is part of it. The auto transmission oil comes from the gearbox (hot) via small pipes it is then passed through the cooler and back into the gearbox. If you have signs of oil around the front of the radiator then you need to get it looked at ASAP. If you loose too much fluid you will damage the transmission and if the cooler splits you may end up with engine coolant in the transmission oil (not good as it will screw up your transmission very quickly)

Apr 07, 2009 | 1999 Jeep Grand Cherokee

2 Answers

Oil in the water


Probably a failed gasket- likely to be the head gasket, though if you're lucky, one of the others.

Need to check this out quickly - although some engines tolerate blown head gaskets better than others, it's usually turns into something much more destructive if left for too long.

A.

Jun 29, 2008 | 1995 Jaguar XJ6

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