Transmission Fluid

It seems like it could be such a far stretch, but your engine coolant, also known as anti-freeze, can get into the automatic transmission fluid. This coolant regulates the temperature of the transmission fluid inside the engine cooling system.

When the fluid passes through a small tank inside the engine’s radiator, it cools the engine. If there was a rupture of the internal radiator tankcouldn cause the coolant to mix with and contaminate the transmission fluid.

The engine coolant can also become polluted by the transmission fluid, as the pressures of either liquid vacillate. The extent of damage to either circuit depends on the severity and longevity of the internal leak.