There is a track legal coolant https://www.evanscoolant.com/product...g-coolant-npg/ but I would check with the facility you are going to just to be sure. However at $30 a half gallon I would just drain the water and fill up at the track. One additional note as I have seen this happen, even if it is slightly above freezing the air flow through the radiator will freeze and possibly burst a radiator
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Originally Posted by longrider
