I have a massey ferguson 135, dont know much about it but want to make sure its all serviced and will last. So today I opened the drain plug on the gearbox up by the shifters to see what the oil looked like inside. It wasnt good it was all milky white in color and I know that means there is a water buildup or something related as well as it seemed to be full only about 1/4 the way up from the bottom. Can anyone give me some advice on changing it out? I really appreciate any response.

