The only reason I would be cautious is what if my transmission and yours started off with a different fill level? You can use the little hand burner dipstick too
I put some on my new to me Lincoln Navigator, its amazing. Was holding up great when I was handwashing. Then when I brought to a modern-ish carwash, it seems to be coming off the rear a bit. Maybe needs another application.
Dave is winning when finding 303 Graphene tho