I have a couple of containers of open Super Blue and ATE Type 200 brake fluid. I've been told that once opening the container, one should use the fluid within a couple of days. It was my understanding that as long as moisture doesn't get in, it should be fine, but I've had multiple people tell me that I shouldn't use what I have already open, as it's been sitting for a while, perhaps a month or two. I have my container of Super Blue with the cap on tight, in a zip-lock bag with it zipped fully. Is this sufficient to prevent moisture buildup? Or, should I consider this a wasted container? I asked someone at Fairfield County Motorsport (a CVC approved tech inspector) and one of the guys told me that as long as I keep the cap tight, I can use it up to a year later. Is there any validity to this? What's the final word on whether or not I can use this fluid?