275 cummins oil change

[Xeroid]

I have recently purchased a 99 Chieftain w/ a 275 cummins diesel. the literature I got with the MH has conflicting info regarding the oil change frequency. One says 6000 miles and the manual says 15000. Whats recommended ????

[Xeroid]

I have recently purchased a 99 Chieftain w/ a 275 cummins diesel. the literature I got with the MH has conflicting info regarding the oil change frequency. One says 6000 miles and the manual says 15000. Whats recommended ????

[Dale Tomlinson]

You have the ISB electronic Cummins, and the the recommended oil change is 15,000 miles or 1 year. I have same engine, but I change every 6,000 miles, since the chassis calls for lubing every 6,000 and since I am doing this, I change oil also. Just my conservative nature!

[Xeroid]

Thanks Dale, for the info. I will keep my eye on things and lean toward the conservative side.