Found my dads original 1971 duster!

If trans is over filled it will puke fluid out the vent in converter housing. So check fluid level.when hot make sure not over filled.
Hmm. Thanks for that info. Come to think of it, despite it slowly leaking onto the floor after my short drives, the level is still almost to the top of the high mark on dipstick. I check it after it’s warmed up for a few minutes….in neutral. Man, wouldn’t that be nice, if I actually had no issue. Fingers crossed!

Also, I read online a week or so ago that I should check dipstick o ring and now it’s being said again. I originally thought that meant the actual dipstick, but does that mean where the actual dipstick tube goes into the transmission?