Cummins oil change intereval x15

That's what Cummins dictate in their documentation anyway. Independent on the fuel mileage or the duty, they limit the change interval to 500h or 12 months.

 

Well there's no way 50K miles is 500 hours.

 

The way that reads is whichever comes first: mileage, engine hours, or time (age of oil from last oil change). For most people, the mileage limit will come first.

I like how Cummins maintenance intervals are more specific than Detroit’s.

https://mart.cummins.com/imagelibrary/data/assetfiles/0059588.pdf

 

How could the mileage come first?

50,000 ÷ 500= 100mph with 0 idle time.

 

Good catch. It’s likely a typo. I found a different Cummins document using 1,000 engine hours instead, which is realistically possible.

60 (mph average) x 1000 (hours) = 60,000 (miles)

https://mart.cummins.com/imagelibrary/data/assetfiles/0032935.pdf

https://www.internationaltrucks.com...df/brochure/4971394-2013_isx15_spec_sheet.pdf

As a comparison, the DD15 engine manual has the engine hours rising from “Severe Duty” to “Long Haul.” See images.

 

Oil and filter is cheap. Camshaft and rockers not cheap.

 

Here's some pics of the system I installed

 

Nice, how much was it for install, what shop did it?

 

All brothers in Nashville. They charged me 250 to install it