CAT C7 Engine Maintanence

JCat wrote:
coolant changes every 2 years.

If you have the book for your engine and your chassis manual, it should give you all the information you need. One thing you are probably doing too often, assuming you are using an approved Cat ELC coolant, is changing that every 2 years. Cat ELC (or another that meets the specs) is good for 6 years or 600,000 miles. Of course it would be extremely rare anyone put 100,000 miles per year on an RV, so usually the change period on that would be 6 years. If you're at the point you want to change out belt and hoses, it might be a good time to put in a new thermostat and pressure cap.

Fuel filters (two of them usually), air filters, oil and oil filter, the air system's dryer desiccant kit, all the grease points (there's probably a lot of them), transmission filters and fluid ( you can extend fluid changes by using the recommended Allison Transynd fluid (assuming that's the transmission you have). If you have front oil bearings, it's cheap insurance to do those every so often...but it does require a large torque wrench based on the ft-lbs needed on the lugs. I'm probably missing things off the top of my head, but those are the biggies I pay attention to (along with my generator).

I'll be checking those turbo boots on mine!