Anyone have some info on this TSB? My cooling fan is not operating like it normally does (i.e., won't stay on more than 1 second at a time).

So the 6.0 HPOP can put out up to ~4kpsi of pressure if commanded. I've noticed over the last year or so that my max pressure has dropped from 3.8kpsi to 3.3kpsi at WOT.The truck starts ok (STC fitting has not failed. Atleast not totally) when cold or warm except after a long haul with my 5th...