I've been vaping a DCT tank, and many other different tank styles and makes. I've vaped Fruity juices (about 10 differnt) types from Florida Citrus, to Life's good. I've vaped Max Blend, wyatt Earp, Burley, pure cig, colt 45, RY4, and RY5, none of which I've had any issues with. I've seen videos of people who have found Menthols will make the tubes turn foggy / semi transparent. I've had no issues with that at all from FSUSA Juices, and I vaped about 120ml's of NewPort Menthol in my DCT.
Hope this helps.