Many, many, many years ago our logging crew would use the Poulan strictly in the cold winter months. We said a few nice things about Poulan because they cut like a Tasmanian devil. But that company had plumbed the exhaust underneath the fuel tank for the weather conditions on the Alaskan Islands and the cold Canadian forest. If the sun came out we lost all those saws because the fuel would boil. I imagine we detonated a few pistons etc when liquid fuel/oil boiled into the cylinder.