Only if “Brand X” oil contains a rust and oxidation inhibitor (R&O) and meets specifications in the Amarillo Gear fan drive Operation & Maintenance Manual which also meets AGMA 9005-F16 lubrication requirements. In addition, lubricants must be compatible with nitrile and Viton seals, Amarillo’s lacquer-based internal gear case sealer, and sprag-type backstops. Extreme pressure lubricants are not recommended. A list of Amarillo Gear approved lubricants are included in the operating and maintenance instructions available at www.amarillogear.com.