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Motor Grease
Differences between motor grease

Any difference between mobil polyrex EM and polyurea grease?

It looks like Mobil Polyrex EM contains polyurea:
https://www.mobil.com/en/industrial/Lubricants/Products/Mobil-Polyrex-EM

This is something a motor manufacturer would be interested in rather than Control Engineers. However a brief comparison suggests polyurea grease can handle higher running temperatures and harsher environments.

I would guess from that it would be more expensive.