Well, it IS entirely possible that our liquids last longer than we previously thought (4-6 months). Most get worried, as we add no preservatives to screw the flavor up, the more oxygen this stuff gets, the nicotine turns darker and darker. This would worry most, even though there's nothing to worry about in terms of still having a usable liquid, it's just darker. With Doublers we never had a doubt that these would stay the course of 8-10 months.
I know I've got a bottle of lemon-menthol that's been sitting for a good 5 months, think I'll give it a try...