Aluminum hydraulic tanks store excess hydraulic fluid in a hydraulic system. They are lighter than steel tanks and also provide better heat dissipation to cool hydraulic fluid as it passes through the tank and before it re-enters the hydraulic system. Tanks also allow air to escape from the fluid. Hydraulic tanks are used in applications where fluid level fluctuates, such as material handling, agricultural, and industrial applications. Cooling and cleaning hydraulic fluid reduces contaminant buildup, which reduces maintenance costs and extends the working life of the system.