EV motors are lubricated with specialized lubricants which include e-greases and e-fluids for the lubrication and thermal management.
The lubricants used in EV motors protect the gears, bearings and other critical components from wear and friction and electrical damage and also helps to dissipate heat that is generated by the EV motor.
The E fluids are made for both cooling and lubrication and the e greases mainly focuses on high speed bearing protection and electrical insulation.
EV lubricants are often formulated with synthetic base oils like polyalphaolefins or PAOS or esters.
The EV motor bearings are sealed and don't require any additional grease or oil.
The EV transmissions use E transmission fluids which protect the bearings and gears in the e transmission which is a single speed transmission in most electric vehicles.
The E transmission fluids also play a critical role in cooling the electric motor by dissipating the heat that is generated by the operation of the EV motor.
EV or electric car and electric vehicle motors they don't require engine oil like a gasoline or diesel engine needs oil as they don't have the complex moving parts like internal combustion engines do such as crankshafts, engine bearings, rods etc that need the lubrication constantly.
However electric car motors do have oil in the bearings that are sealed but they don't need anymore oil or oil changes like an internal combustion engine needs.
Electric car and electric vehicle motors have sealed bearings which are designed for a long life.