Kartorbust
Inmate #627
I think it's you double the cooling capacity with going to a radiator over what the snowmobile had originally, coolant capacity wise. So if it was a half gallon in the winter, at least 1 gallon for summer or even 1 1/2 gallons. https://www.minibuggy.net/forum/motor-engine/6453-snowmobile-engine-questions.html