I have some shakes left over from June and they are 12mg. Shortly thereafter I dropped to 6 mg and my shake stash has been sitting dormant. I recently ordered some 0 mg Chocolate and Strawberry. One thing I noticed is that my old shakes are really dark. I'd say almost as dark as the Caramel Macchiato I recently got. Can I mix the old shake @ 12mg with my new shakes @ 0mg and yield 6mg? (Simple math tells me yes). I have one reservation though. I am thinking that the old shakes may be passed their prime and not mix well with the new stuff, or will "bring down" the flavor of the new shakes. Here recently the new shakes that I have tried have been nothing but outstanding and I'd hate to trash the new juice. Would it be wise to ditch or PIF the older stuff to somebody that will vape it in due time? I loaded my dripper with some fresh 0mg max VG chocolate and it is outstanding! I'd hate to ruin it with some old juice. Here is the color difference. I went ahead and gave the chocolate a try.