Either bring with you or pick up along the way:
- A big roll of duct tape to keep things from moving that shouldn't
- A big can of WD40 to get moving stuff that isn't
- A 1/2" and a 9/16" combination wrench, a pair of slip joint pliers, a crescent wrench, a hammer, a standard and a Phillips head screwdrivers, and a pair of diaganol cutter pliers
- A roll/length of 12-14 wire and an assortment of splices and the tool to crimp them
- Extra fluids--motor oil, ATF, coolant
- Extra fuel filters
- Infrared thermometer
Once you are on your way the first stop you need to make is to top off your fuel and have the air pressure checked in all of your tires.
Do NOT allow the fuel to get below half tank on the gauge or go more than 200 miles before refilling the tank. When you are dealing with a vehicle you don't know and you don't know how long it has been sitting you do not want to suck anywhere close to the bottom of the tank. Going down the road and sloshing everything around is going to stir up plenty of crud and corruption. You don't want all of that crud and corruption to get concentrated into just a few gallons on the bottom of the tank.
Do not attemt to keep up with traffic, particularly if you have any question about the tires.
Stop quite often while first starting out so you can check with your infrared thermometer the actual temps of everything. OEM gauge sets are notorious for only reading within a range and not exactly telling you precise readings. Once you determine what the gauges are telling you is actually what is going on you won't need to worry unless the gauges start reading outside of what is normal for that bus.
Check the temps of all of the tires at ever stop. All of the tires should be within 10*-20* of each other. The tires on the sunny side will be warmer than those on the shady side. As long as they are all within a few degrees of each other and the warmest one is under 120* you should be good to go.
If any of the tires are running over 120* you may have a tire getting ready to fail. Recheck the tire pressure. If it is low refill it and know you may have to stop again to refill. Regardless of the air pressure I would slow down if any tire is running over 120*. The hotter the ambient temp is the hotter the tires will run. But regardless, slow down if the tires are over 120*