I went to walgreens and publix supermarket to get a propane tank. ALL the ones they had from blue rhino were way past mfg date.... 1999, 2001 etc. both places said they just got mew shipments from blue rhino and they were ok and the daye did’t matter! Plus some u couldn’t wven find the date because the indented writing had been painted over so many times you couldn’t read anything.