I almost agree with Johnny... as long as the ASE rating meet or exceed what is required by the MNF then yup... OIL is OIL... I'm over 2oo K on my rig... and have Run, Delo, Valvoline, Walmart, Rotella, Fram Filters, Penzoil Filters, Motorcraft... If its on sale... and MEETS or Exceeds the original Manufactures requirements then life should be peachy. if my engine were to fail from lubrication issues I can guarantee the 2 companies that I purchased my filter and oil from would be hearing from me.
99 F350 4X sc 6sp Dually, 03 Montana 3655FL/5er
http://www.wsdot.wa.gov/traffic/passes/white/ not far from home...