Water cooled spindles in winter temps

Hey David,

bullshit. Do you really think anyone would pour this into the cooling system of their car if it caused corrosion? It is precisely the similar conditions of the car cooling system and the spindle cooling system which is why car coolant is often used. It is if you don’t use the correct anti-corrosive and absolutely mineral-free (distilled = no electrical conductivity) liquid that you will harm your spindle.

(30 °C is 86 °F)

By the way, do you correctly warm up your spindle?

If you care that much of too cold coolant, how cold is ambient temperature in your workshop?