Little known fact about engine coolant….
The stuff you put in your car (ethylene glycol antifreeze, which most people refer to as coolant) doesn’t actually cool as well as straight up water. Its purpose is just that, antifreeze, it prevents the water from freezing.
Larry, Run pure distilled water in your radiator, and only that. If you mix antifreeze/water in your kart, you’ll actually reduce its capacity to reject the engine’s heat as opposed to running straight H20. I dont really see the point in running any antifreeze in your kart (since they’re used primarily in the warm months)…sure it saves the time of draining the radiator, but that only takes a couple minutes! You just gotta remember to do it!