That's seems odd to me. I make sourdough at home without using any oil (article said oil makes bread last longer(?)) and find it goes dry long before molding oc

That's seems odd to me. I make sourdough at home without using any oil (article said oil makes bread last longer(?)) and find it goes dry long before molding occurs, if at all. Usually get a good 3-4 days before it's been hard to eat. I keep mine in a cloth sack in the cupboard if it makes any difference.