TH350 Fluid sprays out!
If I fill mine to where the Yank/lokar distick says its full it will cover the bottom of the car with trans fluid in one pass, on a good hook it will still blow some out running it at the 'add' line. I have a deep pan and even with 2 quarts out it wasnt slipping on the launch. I kept adding a 1/4 of a quart at a time until it just started spitting out on a pass and left it there.
If it seems to be working OK it probably just has too much fluid, or it is severely overheating. If you had a cracked case/cross bleeding passage it would be spewing out at idle also.


