Where does the water in a transmission come from?

Figuring out where the water came from is tricky. Water can come from the radiator or an external source. All transmissions have a cooling line that runs to the radiator. A separate fluid passage circulates the transmission fluid through a portion of the radiator to cool the fluid.

Where does the coolant go in a transmission?

All transmissions have a cooling line that runs to the radiator. A separate fluid passage circulates the transmission fluid through a portion of the radiator to cool the fluid. Sometimes, a leak develops in the radiator between the coolant passage and the transmission fluid passage, and coolant gets into the radiator.

Why does my transmission seize up in deep water?

There is a separate tank and hose in the radiator for transmission fluid. They allow the coolant to take heat away from the transmission fluid without mixing the two liquids. When a leak occurs, the transmission fluid and engine coolant mix with each other causing your transmission to seize up. Immersion in deep water.

How does transmission oil get into the radiator?

Small droplets of transmission oil separate and rise to the surface of the coolant in the radiator. This inspection often involves the removal of the radiator cap, and this action should never be attempted until the radiator cools completely.

What to do if you have water in your transmission fluid?

Shut off the engine. Reconnect the cooler-out line to the cooler. Check the transmission fluid level before turning the engine on again. When water gets into the transmission from a flood or from an accident, you have no reason to believe that there is another issue causing water to leak into the transmission fluid.

Where does the water in a transmission come from?