Was moving some snow today when the right side track made a whistle noise and seem to get tight. When I drive forward I can hear this noise. Sound like its running out of oil to the right track. The drive seems fine. Seems to be something on the right side of the pump. Left side works fine all fluids are correct. There is so.e bu being/seeping on right side of pump motor. Pump shot? I can go out and drive it for a bit and hear nothing. But after a bit it starts again like the hydro is starved.