Gear Lubricants
Gear oils are used in gearboxes and generally operate at low speeds and moderate temperatures.
Automotive gear oils are the EP type
Industrial gear oils are the ST type
EP oils are superior to ST oils
EP oils have better flow than ST oils and can withstand extreme pressures and hightemperature
Industrial gearboxes generally operate at constant load and lower speed, so low cost SToils are sufficient
Certain specialized machines use Hydraulic oils(Pennzbell AW series), Toolwaylubricants(Gulfway series/Pennzway series) or Engine oils in their gearboxes