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S
S Turbine
SAE (Society of Automotive Engineers)
SAE Axle and Manual Transmission Gear Oil Viscosity Classification
SAE engine oil viscosity classification
SAE service classification
Salt Spray Test
sandstone
saponification
Saponification Analysis
saponification number
SARA
saturated hydrocarbon
saturated steam
Saturates
Saybolt Furol viscosity
Saybolt Universal Viscosity
Saybolt chromometer
SBR
SC asphalt
scale wax
scavenger
scoring
screen printing
scrubber oil
scuff resistance
scuffing
seal oil
seal swell (rubber swell)
sealing strength
Secondary Divider Valve
secondary production
secondary recovery
Seed Oils
Self Aligning Bearings
Self Lubricated Bearing
SEM (Scanning Electron Microscope)
Semi-synthetic
Sequence Valve
Sequestering Agent
Series Progressive
Servo Valve
sett grease
Settling
shale oil
shear rate
Shear Stability
shear stress
SI (Systeme International, International System of Units)
sidestream
sight fluid
silicate esters
silicone
single-grade oil
Sintered Metal
slack wax
sleeve bearing
Slide
sliding bearing
Sliding Vane Compressor
Sliding Velocity
Slinger
sludge
slumpability
slushing oil
smoke point (of aviation turbo fuel)
S02, S03
soap thickener
Society of Automotive Engineers
Society of Tribologists and Lubrication Engineers
SOD lead corrosion
sodium soap grease
softening point (asphalt)
Soil Load
Solenoid
Solid Bonded (or Film) Lubricants
solids content
soluble oil
solvent
solvent extraction
solvent neutral
solvent oil
solvent-cutback
Solvent Refining
sour crude
sparging
spark-ignition engine
specialty product
Specific Film Thickness
specific gravity (relative density)
specific heat
spectrographic analysis (elemental analysis)
spectroscopy
speed factor
Speed Govenor
Spherical Roller Bearing
Spider Gears
spin finish
spindle oil
spindle test
spiral bevel gear
splash lubrication
spray oil
Split Bearings
Spun Bearing
spur gear
squeeze lubrication
SRV
SS asphalt
SSF (Saybolt Furol seconds)
SSU, SUS (Saybolt Universal seconds)
static electricity
Static Friction
Static Grounding
Static Transmitted Load
stationary source emissions
statistical process control (SPC)
statistical quality control (SQC)
Stator Electric Motor
Stator Hydraulic
Stator Turbine
steam cylinder oi
Steam Refined
steam turbine
Steering Gear
Steering Linkage
Step Bearing
stereo rubber
stick-slip motion
STLE (Society of Tribologists and Lubrication Engineers)
Stoddard solvent
stoichiometric
stoke
straight-chain paraffin
Straight Lobe Compressor
straight mineral oil
straight tooth gear
Strainer Filter
Stray Mist Surpressant
strike through
strong acid number
strong base number
structural stability
Stub Teeth (Gears)
Stuffing Box
styrene
styrene-butadiene rubber (SBR)
Subplate Section (lube systems)
sulfated ash
sulfonate
sulfur
sulfur oxides
Sun Gear
supercharger
Superfund
Superfund Amendments and Reauthorization Act (SARA)
supertanker
surface active agent
Surface Finish
surface ignition
Surface Tension
surfactant
SUS
susceptibility
Suspension (additives)
Suspension (automotive)
sweep (of a piston)
sweet crude
Synchronizer
syneresis
synlube
Synthetic Ester
synthetic gas
synthetic lubricant
synthetic oil and gas
synthetic rubber
synthetic turbo oil
Systeme International
systemic effect
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