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Radiators
Transmission Fluid
Chevy Suburban

Why would there be transmission oil in the radiator?


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2005-11-26 17:17:32
2005-11-26 17:17:32

Strong possibility of a blown head gasket. Either do not drive it or driver very slowly and carefully to get it checked. You dont have a blown head gasket, you have a leak in the transmission oil cooler which is inside the radiator. The cheapest way to fix it is to buy a external transmission oil cooler and hook that up to the transmission oil cooler lines which are now going to your radiator. then cap off the two ports on the radiator where the old cooler lines went. Your car will never know the difference, and your transmission will probably last longer as the external transmission oil cooler is vastly supirior to the one inside the radiator.

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If there are lines coming from the transmission to the radiator, it has a cooler in the radiator. If there are lines from the transmission to an external heat exchanger, that would be an auxiliary cooler.

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The automatic transmission oil cooler is built into the radiator. If the oil cooler developes a leak the oil mixes with the engine coolant.

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Failed transmission oil cooler, which is part of the radiator.Failed transmission oil cooler, which is part of the radiator.

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The most common reason would be a ruptured oil cooler in the radiator. Check to see if you have oil lines going to the radiator, if you do, you need a radiator. Also, don't forget to change the anti-freeze because it will be contaminated. Don't forget to check your transmission for contamination also, as transmission fluid also runs on the outer region of your radiator to cool the transmission fluid.


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