Mobilgrease 33 from ExxonMobil is a new multi-purpose airframe grease. Researchers developed the formulation to meet performance requirements from Boeing, Airbus, SAE and the U.S. military. It is made with unique synthetic base oil, lithium complex thickener and premium additives to provide excellent corrosion and wear resistance, and operability at very low temperatures.
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Per the cert: it meets MILITARY MIL-PRF-23827C Amendment 2 Type I.