Unless your radiator has a leak, the radiator fluid stays in the radiator.
The 2 lines that come from the transmission and go to the radiator are full of transmission fluid and the radiator is what cools it.
NO just Coolant
radiator fluid
the trans fluid on a auto trans goes through a tube in the radiator to cool the fluid if the tube has holes in it, it will leak trans fluid in to radiator. you need to replace radiator or have rebuilt.or you could put on a aux trans cooler and put plugs where the trans lines used to go.
If you mean does the transmission fluid level rise, the usual problem is a leak in the trans cooler built in to the radiator. Depending on engine temperature fluid will transfer back and forth between the radiator fluid and the auto trans fluid changing the level and color of both.
The transmission fluid cooled by routing it through the radiator. The fluid probably is a milky color because the radiator had failed internally allowing the coolant and transmission fluid to mix. Check the coolant and if looks milky change the radiator, coolant, and transmission fluid.
Where is the radiator to put fluid for 2001 jetta?
you have to put the radiator fluid in the overflow. This is the only way.
In a radiator, the fluids get really hot, when things get hot they expand and then they have to go somewhere, the fluid goes into an overflow.
You have transmission fluid lines that go to the radiator/front for cooling you must have a leak there
Cracked radiator end caps since the tranny fluid runs goes threw the caps for cooling that is the only way tranny fluid can get in the radiator
You replace the radiator