Lubricants for EV Gearboxes and E-Axles: What’s Different?
Although EVs lack traditional multi-speed transmissions, their gearboxes and e-axles still need dedicated lubricants. The fluid does more than standard gear or transmission oil: it lubricates high-speed reduction gears and bearings, removes heat from the electric motor, safeguards copper windings and sensitive electronics, and frequently works inside compact integrated drive units. Low-viscosity, electrically compatible synthetics have become essential for efficiency and durability in these applications.