Hello, I am new to the skid steer thing. I bought a Bobcat 743, runs great and the engine is perfect. There were some oil leaks and play in the axles so I had to replace the bearings and oil seals. When we opened the chaincase cover it was full with milky oil to the top. According to the mechanic, it was required to change the quad seals of the drive motors. The next day the skid steer was used for about 2 hours until a growling noise came up when turning right. The mechanic suspected that the chain might be loose so we reopened the chaincase cover and there was hydraulic oil in the case. According to the mechanic the drive motor seals should be replaced as they are not holding oil pressure. Please advice Thank you!