Well, i, um, hmmm, can't think of any disadvantages. Since the time it was available to purchase, i have been using BH, and only BH. In that time, i haven't stumbled across any of them 'disadvantages' you write about. It is used in my Accura, my Omega, my Triumph, my Omega, and my V2. It works good when it is cold, hot, wet, snowy, etc. It has led to the demise of maybe.........................18 deer, and 2 prairie dog............................................... .................................................. .................................................. .................................................. ................I give up, i have been sittin' here for awhile, but i can't think of any disadvantages.