Formulated with a super-stabilized additive system that neutralizes the formation of corrosive materials. It provides outstanding oxidation resistance, allowing longer oil change intervals. WSO hydraulic oil, produced in Singapore, is formulated from selected paraffinic base stock treated with antirust, antioxidant and antiwear additives. The oil is available in a wide range of viscosities to suit all practical requirements. By keeping the oil from breaking down at high temperatures; superior antioxidant chemistry assures cooler operating temperatures and fewer varnish deposits. This extra measure of protection means longer, more trouble-free service from hydraulic.