That's pretty close to how I did it, though I didn't wait the 15 minutes, more like 5 minutes or so as I readied the front chock stand to hold it upright. Next time I'll wait a bit longer. Thanks a bunch for the official reference! It seems my guestimate was pretty close. I went and dug up that page from the OM and the level was at the "min" when I added and now it's at "max". I will probably drain about just a bit so it's at say 3/4 the way up between min and max and take the filling slower next time, especially now that I have a pretty good idea of what amount might be needed.