campsmokeExplorerNov 15, 2013MaintenanceI have a 2005 Fleetwood Pace Arrow - GM WORKHORSE would it be wise to put in full synthetic oil or semi-synthetic oil? The engine has about 45,000 miles on it.
Cummins12V98Explorer IIINov 16, 2013Run FULL Synthetic top to bottom and you will not be disappointed. I prefer AMZ/OIL. Been using it since around 1974.