Lubrication and lubricants Analysis 101 Lubricating oils 77 Tribology 41 Friction 39 Additives 31 Lubrication 30 Lubricant and lubricants 28 Automobiles 25 Mechanical wear 18 Nanoparticles 15 Maintenance and repair 14 Lubrication systems 13 Industrial equipment 12 Palm oil 12 Testing 12 Bearings (Machinery) 10 Machinery 10 Environmental aspects 7 Mathematical models 7 Nanotechnology 7 Petroleum 6 Metal clusters 5 Biodegradation 4 Biodiesel fuels 4 Fiber optics 4 Internal combustion engines 4 Mathemantical models 4 Mathematics 4 Milling (Metal-work) 4