I have some NORMA Hella's and 10 ml of Brovel Deca. Can the be mixed within a cycle. If so should I use all of one then the other, or mix some of each with each injection?
Well you "can" mix them but I would keep them separate. If you have a problem you wont know which one is causing it (Brovell).
It keeps things simple to use one and then the other.