Oil change interval on ISB6.7
Per the Cummins manual, the oil change interval is 15,000 miles, or 12 months, whichever comes first.
But, if you are putting significantly fewer miles than 15,000 on your coach each year, at what interval are most of you actually changing the oil?
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John and Jana Z
2020 Allegro Red 37BA
First Motorhome
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