BLACK BEAR SERIES "X" HYDRAULIC OILS are superior quality hydraulic oils designed to significantly out-perform most commercially available hydraulic oils. Formulated from the high perfomance Group II base stocks, double-fortified with high extreme pressure additives and a potent seal conditioning agent, these oils ensure the longest trouble-free operation in most types of hydraulic pumps. 
This hydraulic fluid contains a special seal conditioning agent that effectively restores elasticity to seals and 0-rings.  Plasticizer leaches out of seals after extended high temperature operation, causing them to shrink and crack. BLACK BEAR SERIES "X" HYDRAULIC OILS restore those lost plasticizers preventing fluid leakage and costly downtime. 
BLACK BEAR SERIES "X" HYDRAULIC OILS are formulated to virtually eliminate the formation of heat related sludging in sensitive electro hydraulic servos associated with conventional zinc type additives. The premium, special performance additives incorporated in these oils perform exceptionally well even in fine filtration systems. These oils also exhibit superior hydrolytic stability in the presence of water and will not contribute to either formation of metal etching acids or corrosive reactants. 
BLACK BEAR SERIES "X" HYDRAULIC OILS offer top-notch performance in any high output equipment where sustained heat is prevalent. The double compounding of performance additives give these oils optimum antiwear protection and outstanding ASTM D 943 Turbine Oxidation Test performance (5000+ hours). These oils also exhibit superb rust protection and excellent demulsibility of extraneous system moisture.