Hi I have a simple question, I know its been asked before many times but I don’t remember the answer. Ive had an A314 oil bottle for a bit over two years, and I have always kept it in a dark coldish area. I also have other products like IS, Ammo, and tuth. Now how can I tell if there still good (the products I mentioned other than a314 ive had for around 2 years almost, short of just triying them and see if they work. I actually tried A314 this morning and so far I don’t feel any self-effects(the smell seems to be different also)and I usally always feel some as I don’t use pheros often.