What fluid for Top Loader 4spd.

[65coupe408w]

Just finishing up the powertrain swap on my car and need to top up the 4spd as I lost some fluid during the swap. What trans fluid should I run in it? Whatever was in there before was green! I have never seen that before. Thanks for the advice

 

[2+2GT]

90W gear oil.

 

[rbohm]

75w90 gear oil.

 

[65coupe408w]

thanks everyone