Yup pretty much the same process. Word of wisdom. TIGHTEN that spin on filter down TIGHT! I thought we lost the transmission in our Libby diesel. Turns out, the spin on filter fell off.
I've never cracked the line and kept adding fluid while it's running. Probably helps get more trash out of the cooler. But you'll never get everything out. If you've got some spare cash, look at the PML deep pan. They're awesome, plus they have a drain plug. In any case, toss $20 more to install a drain plug on the stock pan. You'll thank yourself next service.