My B150 is leaking fluid. Big stain on the garage floor cardboard. Dip stick is dry. Hydro is cavitating just a bit in high. Dealer is closed. Got a quart of JD low viscosity Hy-guard from the JD dealer who was open. Dare I substitute? Just got 16 inches of snow and need to plow but don’t want to kill my orange tractor with a green tractor product.