historically electric motor efficiency has been "eh" of an issue, so we have historically used thick grease (which is why overdriven wind turbines catch fire, its the grease breaking down). Only recently has electric motor efficiency gotten to be an issue because of EVs, so the tech is catching up.

March 21, 2026 - 16:52 UTC

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and well, lubricant development is very trial and error, it just takes a long time to get it right.

But back to the point : uh, if its oil it should still be changed. It is *nowhere* near as frequent of a need as a combustion motor, cuz no combustion, but it should still be changed.
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Similar reason why transmission fluid (which is just another lubricant) should be changed : it still breaks down over time and picks up contaminants.

The problem is that engines are designed with this in mind, and most EVs are not, and don't have it as a service item.
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