This is just me, but I never initially run Anti-Freeze fluid on my start ups. I prefer using just regular H2O as it is easier to handle when just such a thing occurs and is much easier to clean up. Plus the fact that if need be it can be drained and disposed of much easier should a situation arise that you would need to drain the motor and fix or change something out, That way once it is all broken in and ready for usage, then I will put in the Ethylene Glycol. Just my way of doing things but it works for me...