Glossary of Terms Home > Document Library > Glossary of Terms Ablation Abrasion Absolute (Dynamic) Viscosity Absorption Accumulator Accuracy Acid Acid digestion Acid Treating Acidity Active metal Additives Adhesion Adsorption Aeration Aerosol Aftercooling Agglomeration Air entrainment Alkali Alloy steel Ambient temperature Anhydrous Aniline point Annealing Anodizing API base stock API engine service categories API gravity Apparent viscosity Aromatic Ash Asperities Auto-ignition point Babbitt Bactericide Bactericide Base Base stock Batch Bearing Beta Rating Beta ratio (ß-ratio) Black oils Blend(ing) Bloom Blow-by Boiling point Bottoms Boundary lubrication Brinelling Brookfield viscosity BS&W (bottom sediment and water) BTU Bubble point Burst pressure rating Bushing Bypass filtration Bypass valve Calibration / standardization Cam Capacity Capillarity Capillary viscometer Carbon Carbon residue Case drain filter Catalyst Catalytic converter Catastrophic failure Cavitation Cavitation damage Cellulose media Centipoise (cP) Centistoke (cSt) Centralized lubrication Centrifugal separator Certificate of analysis Cetane improver Cetane index Cetane number (calculated) Channeling Chip detector Chromatography Circulating lubrication Clean room Cleanable filter Cloud point Coalescer Coefficient of friction Cohesion Cold cranking simulator (CCS) Collapse Collapse pressure Colloid Complex grease Compound Compounding Compressibility Compression Compression ratio Consistency Contaminant Contaminant capacity Contaminant failure Contaminant lock Contamination control Coolant Coolant Copper strip corrosion Correlation Corrosion Coupling Cracking Crown Cryogenics Cutting fluid Cycle Cyclic stress Cylinder Deaerator Defect Degas Degradation Dehydrator Delamination Demulsibility Density Deposit Depth filter Desorption Detection limit Detergent Dielectric Strength Dieseling Differential pressure indicator Disposable Dissolved gases Distillation Dry-film lubricant Duplex filter Effluent Elastohydrodynamic lubrication Electrostatic separator Emulsibility Emulsion Environmental contaminant Erosion Failure Fatigue Fault Ferrography Film strength Filter Filter efficiency Filter element Filter head Filter housing Filter life test Filter media, depth Filter media, surface Filtration Fire point Fire-resistant fluid Flash point Flaw Flow fatigue rating Flow rate Flow, laminar Flow, turbulent Flowmeter Fluid Fluid compatibility Fluid power Flushing Foam Force feed lubrication Fourier Transform Fretting corrosion Friction Full fluid-film lubrication Full-flow filtration Gasohol Gauge Gear Gear train Generated contaminant Graphite Gravimetric analysis analysis Grease Hardness Heat exchanger Housing Hydraulic Fluid Hydraulics Hydrocarbon Hydrodynamic lubrication Hydrofinishing Hydrolysis Hydrolytic stability Hydrometer Hydrostatic lubrication Hypoid gear lubricant Idler Immiscible In-line filter Indicator Indicator, differential pressure Influent Infrared spectra Ingested contaminants Inhibitor Insolubles Interfacial tension (IFT) ISO Solid Contaminant Code ISO viscosity grade Kinematic viscosity Lacquer Laminar particle Liquid Load-carrying capacity Lubricant Lubricity Magnetic filter Magnetic plug Maintenance Manifold Manifold filter Matrix Matrix matching Media Media migration Medium Micron, micrometer (µm) Middle distillate MIL-Spec Mineral oil Miscible Motor Multigrade oil Multigrade oil Multipass or recirculation test Naphthenic Napthene Neutralization number Newtonian fluid Nitration NLGI number Noble metal Nominal filtration rating Non-Newtonian fluid Octane number Oil analysis Oil drain interval Oiliness Oxidation Oxidation stability Pale oil Paraffinic Particle Particle count Patch test Penetration Permeability pH Pinion Platelet Pleated filter Pneumatics Poise (absolute viscosity) Polar compound Polishing (bore) Polymerization Pore Pore size distribution Porosity Positive crankcase ventilation (PCV) Power unit Pressure Pressure drop Pressure line filter Pressure, absolute Pressure, atmospheric Pressure, back Pressure, cracking Pressure, rated Pressure, system Process contamination Process oil Pump Pump, fixed displacement Pump, variable displacement Pumpability Rate of shear Reducer Refraction Rerefining Reservoir Reservoir (sump) filter Residual dirt capacity Return line Return Line Filtration Ring lubrication Ring sticking Rings Roll-off cleanliness Roller bearing Rust Rust prevention test SAE viscosity numbe Saturation level Saybolt Universal Viscosity (SUV) or Saybolt Universal Seconds, (SUS) Scuffing Semisoli Shear rate Shear stress Silt Silting Single-pass test Sintered medium Sleeve bearing Sludge Soap Solid Solvency Spall Specific gravity Spectrometry Spin-on filter Spindle oil Splash lubrication Stainless steel Starting fluid (diesel) Static friction Statistical process control Statistical quality control Stoke (St) Strainer Stringer Suction filter Sulfated ash Sulfurized oil Surface filtration Surface tension Surfactant Surge Swarf Switch, pressure Synthetic lubricant Synthetic oil Tensile strength Thermal conductivity Thermal stability Thermography Thin film lubrication Thixotropy Traceability Tribology Turbidity Turbulent flow sampler Unloading Vacuum separator Valve Valve lifter Valve, by-pass Valve, directional contro Valve, directional control, servo Valve, flow contro Valve, pressure control, relief Valve, relief, differential pressure Vapor pressure Vapor Pressure (Reid method or RVP) Varnish Viscometer or Viscosimeter Viscosity Viscosity grade Viscosity index (VI) Viscosity, absolute Viscosity, kinematic Viscosity, SUS Viscous Volatility Wear Wicking Worked penetration ZDDP
