Hello all I bought a used L228 and everything has been working great. I bought a BrushWolf shredder. It goes through Hydraulic oil pretty quick. I bought five gallons from a New Holland dealer the first time and today I went to the same dealer and they sold me Hydraulic Transmission Oil. I am leery if these are compatible. Have had so many people tell me different things that I am getting confused. There is Hydraulic oil and Hydraulic fluid and now they sell me Hydraulic Transmission fluid. What's the differences?