Using the wrong oil weight or a non-rated oil in a hydraulic system causes pump cavitation, scored cylinders, and valve failures - the kind of repair bill that dwarfs the cost of the correct oil by ten times. Equipment downtime on a commercial job site is not cheap. This hydraulic oil is AW 46 grade - the standard weight for mobile and stationary hydraulic systems across a wide temperature range. The anti-wear additive package protects pump components and cylinder walls from metal-to-metal contact during high-pressure operation. Five-gallon size covers regular service intervals without overbuying. AW 46 handles the range from cold Midwest spring mornings to full-load summer operating temperatures without viscosity breakdown. Standard in the fluids inventory of fleet mechanics and commercia Stocked at Crofton Lumber and Akron Lumber.