maintenance

"trophy".....That coach has two issues, one that is minor and comes up on occasion..... that is the idler pulley for the fan belt. I've seen many of those go bad, including the one on the 2004 8.1 that I had. Should be easy to find on the road and can actually be changed through the right front fender well.

The second issue are the spark plug wires. That engine configuration did/does not get enough air flow across the exhaust manifolds and the spark plug wires eventually break down and start miss firing under load. There is a brand called Taylor that many use as a replacement, but buy their best quality model.

If you get a chance, take something like dryer vent tubing, and route some air form the grill to both sides of the engine/exhaust manifolds.

Ya. I pulled the bottom hose off the rad to change antifreeze. I'm thinking this would be the week point. All looked good.... maybe I should carry a spare. Is this a standard hose I can pick up at a auto parts store?

Hoses? They are rubber parts too and 13 years is a long time.

Charles

All fluids replaced. All filters replaced. New serpentine belt. New tires. New shocks. Serviced brakes. Ready to roll. Gonna leave plugs as is. Thx guys

The scheduled maintenance, per the Workhorse manual, for your spark plugs are to replace at 100,000 miles. Mine have over 80,000 miles and I see no need to replace them. I would look at your plug wires to make sure that they are in good shape but other than that, what is there to tune up?
Naturally you want to look at your fluids, belts, and lubrication but I don't think you need a tune-up if the vehicle has been running fine.

Sounds like you got it covered. I too will be leaving in a month to do just the opposite trip heading east. But won't stay the winter. I too wonder if my preparations are enough.. One can only do what they can do and let the rest up to fate . Like the bumper sticker said.. If you can't adjust stay home.:-)