Oil consumption on a 2019 Cummins 6.7

[Orlando70]

So...
The truck is now @ 40 some thousand miles and I just did the 3rd oil change. I know I put in 3 full gallons the last 2 times and only got out about 2 1/3 after even after letting the oil filter drain on the oil collector I use. Any thought?

 

[mtnrider]

Are you checking the dip stick in between changes to see if is actually going down or just comparing what you got out?

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[Gr8bawana]

Did you factor in how much oil was in the oil filter?
On my 2017 with about 45k miles, I have not seen the oil level on the dipstick change even the slightest bit between 15,000 mile oil changes.

 

[tjfdesmo]

Have you worked the engine hard, pulled heavy, etc. ? Stock air filter? High idle time? The CGI engines went to low tension rings, so the potential for oil consumption was on my mind going in. I have been doing 10K OCI's, and have fortunately never had to add between changes.

 

[Orlando70]

Alright...
So, I did not check the oil level between fills. I did check it everytime after replacing oil and filters and it comes up to full on the stick.
I do not idle much/any. I drive 40 miles a day all highway, when I pull I pull. 24 foof enclosed trailer 8,000 lbs Sturgis/Daytona from St Louis a couple of times a year.

 

[Dennis Shellito]

The only reliable way to see if your truck is using oil is looking at the dipstick. My 2011 CTD has not used a drop of oil in over 83,000 miles, but I change at 5.000 mile intervals, using Shell Rotella T-4 15W40 oil. I know I could probably go further on oil changes but I am old and old school, and old habits are hard to break.

 

[Goose55]

The only reliable way to see if your truck is using oil is looking at the dipstick. My 2011 CTD has not used a drop of oil in over 83,000 miles, but I change at 5.000 mile intervals, using Shell Rotella T-4 15W40 oil. I know I could probably go further on oil changes but I am old and old school, and old habits are hard to break.

I agree. 5,000 is plenty of miles to put on oil. Yeah, there are 3 gallons of it in there, but it is good preventative medicine to keep that oil cleaner. I can not fathom putting 15,000 miles on engine oil.