Cyberspace Corvette forums breeds dummies at times and right now it has convinced C8 owners in flushing, draining and filling the DCT fluid
by replacing the DCT drain plug at bottom of DCT with a shutoff valve replacing the plug and adding a hose to it

So problem is to use that for filling the DCT fluid has to be put in a container that air-pressure can be added and then back force the fluid into the DCT

Dummies did not think as the DCT has an expensive fluid filter as seen below and it will be directly in the path of that fluid under pressure forced
to back flush the filter and push the trapped crap in filter back into the tranny.

Also depending on how much air-pressure they use could damage the paper filter and would not be known the DCT is then functioning without
a functional filter and worse if made of paper could rip up and carried throughout the fluid around the DCT

Filter at this time is not cheap and not easy to buy one for around $200.
Also a good chance if a cheap shutoff valve is used that the handle for open/close of valve pops open and drains all the fluid out without owner even knowing
it until the DCT craps out.

Time instead should be to take the engine aircleaner setup out one time and add a hose to a coupler to replace the top fill plug with a fill hose connected to that
and have hose long engine to end within engine bay so in future simply take a hose cap off, add a funnel and fill without having the jack the C8 up