Personally I've never done black tar I live in England, I used for 15yrs heroin ruined my life, your at the point where you can get out now while you can, the longer you leave it the harder it gets, I was on methadone with gear for years, I'd had enough missing most of my teeth had countless clots from injecting in the groin, in all serious mate fuck it off, if you have to have something roll a joint, I got off gear with buprenophine, I was on 2 Grams a day I went from that to 16mg of buprenophine I was sick as fuck for 4 days, you don't want thus life mate I've lost countless friends been hospitalized so many times my health is awful, I had to stop, please please take it from someone who genuinely knows stay away from it, I started at around 19 my dad and brothers found out chained me to a wall I went back to it tho, it's pure evil, good luck