I recall the stories of the early arctic pilots draining their oil into a can at shutdown and then using it as a hot water bottle in their tent. This also had the effect of keeping the oil warm with their body heat to make it possible to start the engine in the morning. I suggest taking the extra oil (in one litre plastic bottles) with us into our room so we can then add one each side in the morning, warming the oil a little that way. The captain likes that idea, and we take the deicing fluid, too.
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