[MBZ] OT: List wisdom re: Sub tranny flush

[Peter Frederick]

unless you drill a hole in the TC, all the fluid will stay in it 
(unless you let it sit six or so months, and then only half will drain 
out...).  The "flush" techique uses the cooler lines -- one to spill 
out, the other to suck fresh fluid in.  Works well, with the normal 
caveat -- an old, high milage, tranny will sometimes fail immediately 
after getting fresh fluid.  Not a problem if you've been changing it, 
but something to watch out for.

Peter