Cummins ISX15 OCI

[The Critic]

What is the typical oil change interval for a Cummins ISX15 Engine?

I am currently running Valvoline Premium Blue Restore 10W-30 which is an oil designed to clean piston rings on ISX15 engines. The instructions state to run the special oil for an entire oil change interval, so I assume that I will need to run my oil for a similar distance in order to achieve the desired results.

 

[The Critic]

Hmm, it looks like 15K is the interval under severe service conditions:
https://www.cumminsfiltration.com/sites/default/files/PD10021_2.pdf

 

[paoester]

The Critic, There is no comparison between what an ISX15 experiences and what a 2007 Honda sees. Sump size, diesel vs. gasoline, soot loading, filtration, highway vs. city driving, engine design, you name it, and its different.
That said, your Restore has extremely tough base stocks & additives, so you can go 10,000 miles or 1 year in my estimation, easily.
Probably want to change the oil filter every 3,000 miles to make sure all the stuff coming off the pistons & elsewhere doesn't get too clumpy in the filter.
Use a Fram Ultra for best capacity.

 

[Chris142]

When I drove we went 15K. I know some companies are going 30-40k. They send a driver out and don't see the truck for months.

 

[Danno]

Ran the ISX 15 on our fleet of 100 trucks. 25,000 miles was a typical OCI.

 

[The Critic]

According to page 3, it looks like Valvoline "tested" a clean-up drain interval of 5K for gasoline engines and 30K for diesel engines.
https://patentimages.storage.googleapis.com/e6/19/8e/24bb28eefcfd7e/US20170029734A1.pdf