If its sealed I would not be concerned about it.
Yes it will be fine if it's sealed. Oxygen, heat and contamination are big three that degrade oil and fluids. If it's sealed it has not seen any of those and is still perfectly good oil/fluid.Okay doesn't mater how old the fluid is if its sealed it good? My understanding is that brake fluid is only good for 3 years I'm assuming that's unsealed container.