Hey guys,long story short,good buddy has an '03 6.0 that stranded him again.Its now in its 7th shop visit.Dealer says foamy oil,bad oil,THEY just did the oil service 2,100 miles ago.Hes ready to begin buyback (if he can) I think an oil analysis is a good place to start,needing Blackstone Labs address and DSB info/input.A.S.A.P. if possible.Thanks much,Mark.