Scru00~I have never seen sust come in brown amps..only clear and redi-jects. You can give it the frezzer test to see if its legit.
1. put amp in frezzer
2. Oil will then cool
3. If it's real the oil should cloud up
4. If oil stays clear or only clouds up slightly it is not real.
What we are looking for whith the high dosed steroids such as sust is a comparably much quicker and more profound precipitation of crystals...hope this helps