Delspin HLPD oils are multipurpose lubricating and hydraulic oils formulated from a blend of highly refined base oils. They contain additives that protect against oxidation, foaming, wear, and rust. Delspin HLPD oils contain a special zinc-free additive that provides improved corrosion resistance and water separation. They contain no ash-forming additives, preventing additive breakdown under high pressure and thereby avoiding filter blockage.