If i were doing a basic engine service i would: change the oil and filter, fuel filter, air filter and maybe the spark plugs / possibly leads depending on condition. Check coolant condition and top up / change as needed. Probably check the serpentine belt also. Check all fluid levels and top up / change as needed. Lubricate throttle linkage. I think thats about it for a basic 'tune up' Nothing remarkable about the Mark VIII with regards to that stuff, just don't over torque the spark plugs!