crazyhorse, it seems like there is always something different or inconsistent about the PTU units over the years. Possibly some mid-production changes. Adding liquid cooling, high torque PTU units on the ST, different vendors etc. might be some of the changes that cause so much "PTU confusion".
My PTU on my 2024 ST has a cooler and no drain plug. All I can tell you is that if your PTU has a drain plug, you are one of the lucky ones.
I have to remove the nuts retaining the cooler and pop the cooler out about 1/2 inch to drain my PTU. Yours should be easy.