Last season in McMurdo Sound, our dive crew had constant issues with biodegradable lubes seizing up below -2°C. It really puts you in a bind when you're trying to do right by the environment but your equipment fails. Regular silicone-based lubes work flawlessly in the cold, but knowing they're polluting pristine waters feels wrong. I lean towards finding a middle ground, like testing new green formulas under extreme conditions before full adoption.