Synthetic basestocks for hydraulic fluids

Heavy duty earth moving equipment in operation in a hot, dusty environment

Hydraulic fluids need to provide wear protection, seal compatibility and corrosion resistance over a wide range of operating conditions.

Compared with mineral oil-based fluids, synthetic hydraulic fluids based on SpectraSyn Ultra™ High VI PAO, SpectraSyn™ Hi Vis and Spectra Syn™ Lo Vis PAO  and Synesstic™ AN (Alkylated Naphthalene) Blendstocks can be more durable under thermal and oxidative stress. They’re also cleaner in operation and can span wider areas of use.

When properly formulated with antiwear additive packages, hydraulic fluid made with PAO and polyol ester combinations are recommended for systems using gear, piston or vane pumps operating at either high or low pressures.

See our Synthetic Basestocks Formulations Guide for specific basestock recommendations for hydraulic fluids.