The range includes engine oils, transmission fluids, drivetrain lubricants and various greases. GOI trades mainly in lubricants, oils, and greases. The main product lines are Mobil SHC synthetic oils and Mobil Grease greases. Soaps are key components of most lubricating greases and thickeners. BL products include steel barrels, industrial greases, specialty lubricants, corporate travel and logistics services. Lithium soaps are key component of many lubricating greases. Polytetrafluorethylene (PTFE) is widely used as an additive in lubricating oils and greases. It was particularly noted for its range of lubricants and greases. Biodiesel is made from vegetable oils, animal fats or recycled greases. Molybdenum dithiocarbamates are used as additives for greases. Presently HPCL produces over 300+ grades of lubes, specialities and greases. In 1947, divided lipids into "simple lipids", with greases and waxes (true waxes, sterols, alcohols). Some oils and greases will boil off in extreme vacuums. In lithium-based greases, lithium carboxylates are thickeners. One of the early vacuum greases is the Ramsay grease.