first of all,i'm prone to any other gear injection pain big time.i am gonna do prop and fina very soon.but i don't know which one is work better to dilute them.some guys say sterile oil will do the trick,but some other guys say don't like to get any extra oil in the body.

some guys say use b12 with it,because we need it. some guys say water base is not ok to mix with gear,but some guys say water base like b12 do better than sterile oil to dilute the prop???!!

making me crazy with this problem,tell me what you think.