How much tranny fluid is in the radiator

[rockin1978TA]

When I change out the radiator on my 89 535I this weekend. What about transmission fluid. After installing the new radiator, how much does the radiator usually hold? Or does it all drain back to the transmission once it cools?

[Tiger]

Tiny amount...

[Russell]

Tiny amount...

I would think a couple of quarts counting the lines. Just a guess.

[Tiger]

I have taken quite a few radiators off... most of them only held like 1/4 of a quart or less. Just pop the line off and you will know.

[rockin1978TA]

You guys were right,not much fluid in the radiator. One thing i learned is, keep the hoses upright. Otherwise, she'll keep leaking. So, not only did she get a new radiator, she got a new set of hoses as well. Now it's time to change the tranny fluid. The hoses were caked with sludge, along with black fluid from the radiator. Thanks again!