where do i pour the atf fluid after i changed the filter?
 

not sure where to pour in the fluid. i took out 5 quarts what fluid should i put back also any additives go with it? thks its an 86.5 autmatic 928

First you should have gotten about 8qts out of the trans did you drain the torque converter??
To fill the system i use the hand pump and the new 5 qt bottles of Dextron 3/4.

Fill the tank after removing the cap, once the reservoir tank wont take any more run the engine for about 30 seconds, shut is off then continue filling , repeat this process a few times till the tank doesnt drop down.
Then you can run the engine while final topping up is done, run the trans through the selectors to let each one fill back up

Also did you replace the pan gasket and filter??
The fill is the done after removing the red cap

changed the filter and gasket got 5 quarts from the pan,didnt drain the convertor. was hoping to fill it from top of the engine now if it is ging to br filled through the red cap a little trickey. ps just drained the convertor there should be somthing on tech about this procedure

Yup, that's why we are here. We've all done most of what is posted here, so best to get hands on advice. Yes, you will need a hand pump. My reservoir was very dirty and you couldn't see the top-off line, so I removed it and cleaned it completely. Good that you also drained your TC as old fluid will only make your new fluid bad. It's a patience procedure as it takes a long time to fill with ATF.