Diesel Fuel storage indoors or outdoors

[haanzel]

I am going to get a two 100 gallon fuel tanks. The tanks are made from 1/8” steel and have 2 holes, one for a pump and one for a cap, or whatever you want to put there, I will use a vented cap. The fella I was talking to said to try and keep them indoors if possible due to temperature and moisture/swelling that may occur. The plan is to keep these available for the pto generator. I am in TX so it does get hot.

This leads to a couple questions:
1- Is there a difference between keeping them in my shop or garage vs outside but covered?
2- If I keep them inside the shop/garage, will the fumes be too much or too dangerous from the vent?

 

[woodman55]

Without question, inside, just like a furnace oil tank. If you are concerned about vapors, vent them out side, but would try vented inside first. The main thing is to try to reduce temperature variations as much as possible. This what draws air/moisture into the tanks.