Did the first oil change today. Changed everything, engine, sub and diff. Let me say that it make a mess with the skid plate. I 'm going to have to use way more towels on the next change. I've got card board under it right now because it's was dripping on my carport. But that's not why I posted. I took it for a ride and you could feel and hear the difference in the machine. It shifted smoother and quieter. Very noticeable, and I can't hear that well. I used the Honda 10w-30 HP4S in the engine and Amsoil 75w-90 in the differentials.