Thanks all, for Redline info/instructions!
One more question:  several have warned I should
be sure I can get the fill plug out before draining.
Is this mentioned *only because I must have the right
size socket for the job, or is the fill plug often difficult
to remove?
Now that I'm changing my own oil & filter--this tranny
oil change might be another job I dare to tackle!

Thanks,
Phaedra
'85 Wolfsburg Westy Basecamp