Lucas, Gallon Hydraulic Oil Booster & Stop Leak, Additive For Hydraulic Systems That Stops Leaks & Increases Hydraulic Pressure, Use In New Units To Stop Initial Wear & Increase Fluid Life, Renews Hydraulic Fluid With An Additive Package That Stops Seal Leaks, Boosts Pressure, Reduces Operating Temperatures & Increases The Life Of Hoses, Rams & Cylinders, Preventative Maintenance Product, Stops Leaks, Prevents Major Overhauls, Reduces Heat & Increases Equipment Life.