Well my tinnitus sounds like engine all the time and i have H and reactive tinnitus to. But the more my brain forgets about my T because i stop to think about it the lower it gets next time im thinking about it so its alot easier to stop think about it again. My tinnitus is so loud that even music cant mask it, the only reason i have a easier time is because i stop thinking about it, and then my T will get lower. So i think i know what im talking about I my brain have just learn to ignore it over time because i have trained like that ever since i got it. and it took atleast 1 years training for me. and it gets easier with time.