Mobilgrease™ 33

Mobilgrease 33 is a high-performance, BMS3-33 multi-purpose airframe grease uniquely formulated with a proprietary blend of Polyalphaolefin (PAO) base oils and lithium complex soap. Unlike other commercially available BMS3-33 greases, this unique formulation is ester-free, providing superior performance and hydrolytic stability, excellent resistance to thermal and oxidative degradation, exceptional wear, corrosion and rusting offering excellent bearing and component protection in heavy loaded pressure environments, without an offensive odor. Our ester-free blend offers exceptional performance in wet environments — to resist water washout and evaporation loss, protecting the grease from the deteriorating effects of hydrolysis.

https://www.exxonmobil.com/en/aviation/products-and-services/products/mobilgrease-33