I got my machine in a deep mud bog this past weekend, I got it out, drove it back to the trailer, loaded it up and came home. After I got home, I notice some oil/water mix had dripped onto my trailer floor, I checked the oil it is clean, could this be from the transmission oil, where do I check this, how do I drian it, and how much oil/what viscosity does it take? I went ahead and bought another oil filter, as I am going to change the oil anyways, so please help me figure this out so I can do it all at once.