Hi Scott, I have a 98 Ticonderoga with the Cat 3126 engine. You should order the airbrake lubricant, it is easy enough to get at without lifting up the bed. I recommend you replace the transmission fluid and filters as well as oil Filter and oil, which is 19 quarts if I remember. Check if your engine has the deep sump. You should replace the fuel filters as well. I also put stabil and an anti bacterial in the diesel tank. If you replace the antifreeze, you can use the 5 year extended life antifreeze as a replacement for the regular antifreeze with the additive. Other items are your front wheel bearings which are in an oil bath, and your rear differential. If you look at your radiator from the engine side, look for oil and dirt coating the fins. If you find that is a problem, you can look on line how to put your slobber tube into a plastic bottle or reroute the slobber tube. You may also want to check if your headlights have had the brightness fix done through the wiring modification. This forum really does have a lot of answers. If you have any more questions, don't hesitate to ask. I will answer if I can, though I suspect Eric Maclean knows a lot more than me.