I have the Primus eta packlite but it is the same liquid feed. Liquid feed will be Ok down to those sort of temperatures without much warming but of course will have more pressure if it is warmed. The point is that liquid feed does not rob heat from the canister like a gas feed does, so the liquid feed canister will stay almost at ambient or whatever temperature it is. The gas feed canister will get colder and colder as the liquid gasifies inside the canister. I bought the packlite because it is lighter than the helios, then I cut mine down to 300 grams pot/lid/windshield/handle and burner.