Cold Weather Coolant Leak

[Buc-Kee]

I have a 2024 Heritage with the 2.3L manual. I live in ND and it’s been s#*t a$$ cold here the last couple weeks. I started noticing coolant dripping off the skid plate and down the drive when I parked facing my house up the drive incline. After a few days of this and filling the overflow tank I decided to back in with it, pointing down the incline. No obvious leak. Now that it’s warmed up there is no leak. Regardless of how I park. So appears to be a cold weather coolant leak. Anyone else experiencing this? I couldn’t find where it was coming from but it’s going in tomorrow. My fear is they’ll find nothing.

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[MNBigfoot]

Positive it's coolant? -30 could freeze some washer fluid.

 

[Buc-Kee]

Definitely coolant. I’ve had to add coolant to the overflow tank twice because it was below the min line.

 

[jdawg]

I have had a similar issue with a VW Atlas. Only when it’s bonkers cold. I am not sure why this happens. The only thing I did find was that there could be air in the system going to the inside core and to park at an angle (nose up) to try and get it out. Not sure it applies here to the Bronco.

 

[B22-2023]

Maybe it’s thermal shrinkage of a line or fitting during extreme cold, try to check as many connections as you can, especially when you see it has leaked - trace it.

 

[eugenemoyer8]

So many vehicles today have O-rings to seal hose fittings that once they get a few miles on them they shrink when it gets extremely cold

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