I cannot find a straight answer on the internet on this one. My Google skills are excellent, but it isn't lack on answers on the internet about Kersosene storage, it is the vast arry of answers about it. So, how long can you store Kerosene and still be safe for indoor burning? Some websites say 1 to 3 months. Some say 5 or more years. I have some in my garage that was stored in clean, dark containers for about 2 years. I want to use it, but am a little concerend.