I always like to begin my dumb questions with " I have a lot to learn, so bare with me." And, I dont own a manual. If when changing the oil on a DRZ you empty it from the frame AND crank case, however fill it only from the frame, why cant I drain the whole thing from the crank case? Wont it all flow out from there as well? Seeing as I fill it from the frame and it goes into the crank case? I didnt care for the way the oil shot out of the frame. A messy hassle in my opinion. Time to change it again but, I was hoping I can drain it from the crank case only. At the very least tell me the way I think makes sense?