800-1000 gallons. Stored in sealed 55 gallon drums in open sided sheds in deep shade. Average age of rotation right now is about 21 months. Oldest sealed drum I've opened was 27 months. Looks, smells, and burns just as well as the day it went in. I've been doing it in this fashion for over two decades now.
Curious. Do you use fuel stabilizer in your drums?
Curious. Do you use fuel stabilizer in your drums? I asked because I'm not sure how long gasoline will last if stabilizer isn't used. I know from experience that untreated gasoline will still be good after eight months or so, but I'm not sure how long untreated gasoline will stay useable.
Sealed tight is the key. Keep the atmosphere out of the container and it will last at least 27 months without stabilizer
Where do you put it?
Personally, I try to follow the rule of "enough gas to completely fill your vehicle once" as a minimum amount of gas to have on hand. I don't do a good job of staying on top of that. For me it's easy to rotate gas with the garden tractor and the amount of land we mow.
I had a gasoline generator at the old house, switched to propane at the new one.