One of the chief difficulties encountered in cooling gasoline by dropping dry ice into it lay in the fact that as the dry ice extracted the heat from the gasoline, gaseous carbon dioxide was liberated and in the process caused heavy boiling of the gasoline. While we could reach the desired temperatures very quickly by using adequate amounts of dry ice, we were limited to the amount which would not cause all of our gasoline to bubble away and be lost. ... This same effervescing of the carbon dioxide from the cold gasoline caused us no end of trouble in keeping filling connection caps on the tanks during gun-firing tests.
Yes, they had to test the self-sealing in cold as well as hot; rubber gets brittle in the cold.
The British shot down so many German airplanes over England that it is reputed that they were in a position to supply the Turkish Government with spare parts for the airplanes which the latter had procured earlier from the Germans.
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