89 700r4 maintenance

Changing the fluid and filter in the transmission, and wondered if the use of Seafoam or Trans x transmission cleaner would be of benefit. The engine
got hot (220) due to radiator leak which is fixed. Would cleaner help the trans cooler lines as well ? It's pushing 250,000 miles and I would like to avoid the rebuild as long as possible. Thanks all BD
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.