Looking for what hydraulic fluid everyone is running in their 400. I have an '82 400. I was running JD Hy Gard in it for a number of years. Last summer I ended up filling it with Tractor Supply's - Traveller Premium Universal Hydraulic fluid. It overall seems to be running slower now. Slower speed and slower loader functions. Is anyone running the low viscosity Hy Gard? I'm going to be switching back to Hy Gard but haven't decided between the 2 versions.