Hi, newby here. I cant vape pg in high %'s. All my nic is 100mg in VG base. I bought 5 200ml bottles about 5years ago and poured them all into 30 and 50ml glass bottles. I keep one 30 or 50ml bottle in the fridge, I use it to mix 100ml batches. 100ml lasts 24 to 30days, which means a 30ml bottle of 100mg nic base will be bought to room temp about 10 times. I have never noticed any extra peppery taste or strangeness to the taste except last summer when I left it on the bench for 3days while I was away. I thought the extra peppery taste was an improvement tbh. I m tempted to leave one 30ml bottle out just so I can get a good peppery brew going. I dont like or enjoy sweet flavoured juice. Anyway, its all still good after 5yrs. I cant see why it shouldnt still be good in another 5yrs.
Cool little forum btw. Makes a nice break from visiting forums where all the US members are triggered AF.