wow, thats something new to me but then again i dont keep up with these things. i just finished 2 tanks of 2 different cinnamon juices, just ordered a new banana flavor and thats gonna go in the tank too because now that ive gotten the hang of this thing its the only way i vape. so i guess ill test that theory out.. so far no cracks. vaporescence sells the clear tube part for $5 so i dont see it as an issue.
It's funny you brought that up, regarding cinnamon... I use Lorann cinnamon oil in my main all day DIY juice. First I mix it 1 part oil and 1.5 part PGA in a designated bottle. Then I add between 6-8% of this mixture to my juice. I have had my SS Liquinator for exactly two months and it's been filled with this juice the whole time since the day I received it. And I don't see any signs of potential tube cracking yet. I do wonder if there is more to this theory...