It is designed for high RPMs. In WV with the hills if you are going to have to have it down shift to climb. The main thing after it screaming as you go up a hill like they have is it likes gasoline.
I do not recall which of the early years had which problems. Overall it is a gas thirsty high RPM runner.
Search for spark plug for v-10 and it should point you in the right direction for the years you need to take care with.
Good wishes with your coach, enjoy.
2015 F350 Lariat Diesel Dually, White, Hitch Kit.
2013 Dutchman Voltage 3200 Epic II 5th wheel.