I would like to sample the fluid from my 2013's 6R80. Is there actually a dip stick? Is a tool required? I need about 4 oz taken with a siphon pump. If I were to crawl under is this doable?
Yes there is a dipstick, it's inside the fill plug, and yes you have to be basically on your back to do this, do not jack the car up because it has to be idling in Park, tranny at running temp and on level ground. Then you'll have to crawl underneath next to a smoking hot catalytic converter to get an accurate reading.
If you haven't touched the fill plug before, good luck because it's really really damn tight the first time you try to open it.
Yes you'll need some tool, siphon pump to get the fluid out is the least messy way to do it. To refill the fluid I bought a roll of 1/2 inch tube with a funnel and refill it from the engine compartment. There should be plenty of videos on YT about the procedure for you to follow step by step.