CLeaning a propane tank residual smell in winter?

[HuskerMan]

What’s the best way to clean the potential residual smell of a propane tank in the winter when you can’t let the soap/water combination sit for a week in it? Would hate for the tank to expand and get out of round if all the water froze.

 

[sjb67]

I cut mine then built a fire in it

 

[Kmm]

How big is the tank? It would have to get pretty cold to freeze a large tank solid in one week. A simple solution to keep it from freezing would be to toss a heavy tarp over it and fire up a torpedo heater once a day for a couple hours. Insulated blankets would also help. A simple aquarium aeration pump dumping air into the water would also work...just be careful not to use too much soap or it will foam excessively.

 

[cholloway]

Just don't fill the tank completely full and leave
it open on top to expell anything.