Condensation in storage

[Dmulder]

So my mini is stored for the winter in a non heated garage.  Today I was climbing around and under the car looking for what my winter projects will be and noticed lots of condensation on the fuel lines under the car. Should I be worried about this?  Is there a good way to stop it?

[John Gervais]

My garage is also unheated, but it's well ventilated also.  The 'window' is merely a missing brick with a cast-iron anti-vermin grill in it's place.

I've noticed that there isn't any condensation when I first enter the garage, but after I've been in there for a while, there'll be some condensation on the lower half of the doors and quarter panels.

I'm not worried about it, as soon as I leave, the temperature and humidity re-stabilizes to the outdoor conditions.

[Mudhen]

I have a dehumidifier in my garage - it's one of those stand alone, a/c / dehumidifiers.  The only issue is once the temperature falls below about 50f it gets confused and won't stop running even though it can't pull any moisture from the air.

I'm surprised there's that much water in the air this time of year, though?  Or have you been as warm as we have...

[Dmulder]

We've been warm and we've been swamped with rain the last week. Wondering if a sheet of plastic under the car would be a good idea.

[MtyMous]

If I haven't already made it known that I'm on the crazy end of the car guy spectrum. Haha. Yes! A vapor barrier is always a good idea if you believe the moisture is coming up from the ground. If the moisture is just from the ambient air blowing past the car, then it won't do much. I don't remember the exact conditions you are storing in, but i remember it being outside, so you can have a combination of both factors. You can buy thick vapor barrier from a home improvement store or you can buy what I have. It's a very thick vinyl sheet made specifically for garage floors and cars, but will do a great job.

They can be found cheaper,  but this is an example.
http://www.garageflooringllc.com/g-floor-small-coin-garage-mats/