Two2cool in the Snow?
That is correct, If you think that your engines are not developing heat internally then you are wrong! Most Snowmoblie engines work extremely hard. Some maybe harder then others. The Mass of the Sleds is Great than the ATV or Motorcycle counterparts. Making the engine work harder, cooling systems have the benefit of the colder air to cool the heat faster, but that doesnt mean it is not there damaging internal parts before the cooling system can lower the temps.
DO NOT THINK YOUR SLED DOESNT NEED IT!