Like he say's when it starts comming out your fill hole it's full and this is desirerable. You can underfill, and this condition is not preferable and is impossible if you let the fluid come out the fill hole. It's quite an easy process with little to no room for error. Yes you can dammage the trany over time if you add too much fluid. Much like an engine the trany has seals and gaskets and when they are under excessive stress such as high fluid volume they could become weak and possibly leak.
I just had my fluid changed a couple of days ago with Mobil 1 ATF with the Ford friction modifier. The difference is amazing. I've never felt a smoother trany.
Black 98' Merc Stique GS MTX Duratec
Cat-back 2.5" SS plumbing with Flowmaster 40 muffler
KKM True Rev induction
Eibach Lowering Springs
16" Fast 17 wheels with 225/50/16 Potenza RE910's
Code alarm with pager
20% tint on sides and 5% on back
Alpena Racing pedals
Painted calipers (black)
55W & 65W Xenon Headlamps
Mobil 1 Synthetic ATF with Ford FM
Clear Side Markers w/orange bulbs
Removed rear badging
"Park it, or put a porch on it!"
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