I cannot take ownership of the dipstick installation as it came from a Q forum and was then posted here by another member. I did the installation; however, with great success. Much easier checking the fluid level as well as refills through the dipstick tube that installs in lieu of the referenced OE plate.

Oil professional over 32 years. I insist on tranny fluid that's changed. 60k especially if even street raced. I'm just now reading some threads on the subject. I blended all types of oils for automotive and industrial as well. ATF has a super low pour point & is still subject to breakdown and obtaining oxidation, moisture, and other contaminates. Engine oil must be changed and I do mine every 5k miles regardless. Commented from my phone so hope this makes a bit of sense .
I seen many oils in the lab and rarely after high miles or run conditions do they meet specs for viscosity, color, and more. Preventative maintenance is a must for me. It would be nice to take a sample out of the transmission so I could take it to a lab for further analysis. See the before and after results.