I'm about 6.5 mls of MBV Butterscotch +1 in on a fresh protank coil w/evod post in my Vision Victory bcc 5ml tank.
It hasn't started tasting funky or lessened vapor production yet.
I've been using the same half dozen or so original evod coils since July.
I soak them for hours in HOT water after every tank and dry burn them every couple of tanks.
I wanted a fresh coil for my VV tank dedicated to MBV BS so made this hybrid yesterday.
Butterscotch is cleaner than you'd think.
I haven't tried the butterscotch yet but that was on my list. I guess I'll start cleaning them more often. I usually go through 2 tanks or so in my evod before I clean. I need to get in the daily groove of cleaning, as of yet I haven't found what works best for me. Thanks for the suggestion