546T (or many of the slbp Mercs in fact) has been a suana since
it was on 105, gone to hgdep, became better (hgdep gets an amdep
mechanic over when ever there is a Merc in hgdep), but now bad
again, sounds bad, heating also.
Others like the usual 511T, 105 buses, have heating problems. slbp
mercs don't sound nice also.