Mavani Aerolubes Pvt. Ltd. Manufactures Anti-Foaming Semi Synthetic Gear Oil. Mavani Aerolubes Pvt. Ltd. Offers a wide range of synthetic and specialty lubricants for various industrial applications. The Anti-Foaming Semi Synthetic Gear Oil is specially formulated with anti-foaming agents and friction modifiers to facilitate high performance, longer life and saving in energy of machine gears. The Anti-Foaming Semi Synthetic Gear Oil is available in 1 litre bottles and 25 litre drums.