(AP) -- Phil DeVore pulls a folded piece of aluminum from a murky pond. The aluminum looks like a piece of siding that's blown off a building, but DeVore knows it's much more valuable than that. He slips a rubber band off the aluminum and unfolds it. He likes what he sees -- 50 or 60 glistening black leeches. They're your common ribbon leeches, Nephelopsis obscura to aquatic biologists.
Storing Used Oil. Used oil can be successfully stored in a cool, dark place for up to a month. Refrigeration or freezing increases the oilâs lifespan by several months. The oil may become cloudy during storage but this is not harmful and the oil will become clear upon reheating.
Shelf Life Of Vegetable Oil. Every bottle of oil should have a âuse-byâ, âsell-byâ or some similar date labeled on it. In most cases itâs 2 to 3 years after the production date. Please remember that the mentioned date is just a rough estimate and it doesnât (by any means) mean that the oil will be bad after that date.