I'm replacing my radiator in the morning with a mid grade Rock Auto unit. $155. 09 LC 145k miles. It blew while I was on vacation in Little Rock and I put some radiator repair putty on it and it slowed the leak enough for me to go from Little Rock to Dallas and home to south Mississippi. I probably put about 20 ounces of water in it along the way. And yes I'm going to refill with Toyota coolant after the replacement.
My question is, no one has mentioned topping off the Transmission fluid after the radiator replacement. Not even on the Toyota shop receipts. Is it such a small amount it doesn't matter?
When I replaced my radiator, I stuck a bolt in the hose as soon as I removed the hose, I want to say less than an ounce went on the floor.