It appears to be a clear oil. I've not had time to find the leak I tried to spot it. It almost looks like some sort of freeze plug on the under side. Just infront of the seat. I've not purchased a Service manual for it yet, anyone know a good place to buy one? Its a 2003 with 460 hours. It was owned by a 70 year old guy that mowed 2 acres with it.. The leak was small I gave hardly nothing for it a loader and box grader.