Re: hailing qc
What year? Engine Model? I'll double check on the gallons of fuel, but with so much idle time I think I'd want to change based on hours at around 250. I use to do calcs for fleets on this, and I would start by asking how many hours a day does it run . . . It usually is a real eye opener

Think about time cards etc. 40 hour work week . . . Make sure you use a good C grade oil too. CI4 Plus or CJ4 are the standards now . . .