How often oil change 6.7 cummins?

[Bryan tahoe]

How often do I need to change the oil? I read conflicting advise. Anywhere from 7,500 to 15,000 miles. It is a 2018 ram 2500. Thank you. I do tow quite a bit.

 

[Outbreak]

I got a deal from my dealer for 4 oil changes for about $150. Whenever they change it, they write 5,000 miles on the sticker. I'm not sure if that's accurate or not - I doubt it is.

The 4 oil changes are only good to be used in 2 years, and the last oil change I had less than 2,000 miles on it. I deploy a lot and haven't been putting many miles on my truck.

 

[MADDOG]

The 2017 diesel supplement that comes with the owners manual says 10K. The manual says 10K for 1500 models and 8K for 2500/3500 models. However, it does not state if this is for a CTD or not.

Since the supplement is diesel specific I'd go with that interval. My CTD has a full DPF/EGR delete so I change at 8K miles.

You can download the diesel specific supplement for your truck here:

https://www.manualslib.com/manual/1326173/Ram-Truck-2500-2018.html

 

[Jimmy07]

How often do I need to change the oil? I read conflicting advise. Anywhere from 7,500 to 15,000 miles. It is a 2018 ram 2500. Thank you. I do tow quite a bit.

From your diesel supplement in the 2500+ section (CTD)
When the oil change message says to, 15,000 miles, 6 months, or 500 hours...WHICHEVER COMES FIRST.

 

[SyN]

Bryan: Just my simple opinion.

If my idle hours are decently low? Look towards the 8K mile mark for my OCI.

If I acquire a decent amount of idle hours?
I look at 6-7K mile OCI.

If I ever Have to idle more then 1-5 min - I use my high idle @ 1200 rpms (to keep the 6.7L engine temp up as close to normal operating temp as possible). Just trying to avoid any amount of fuel dilution.

I do use a high quality synthetic along with a very high quality synthetic media filter - so I feel I have a good buffer to rely on if I over shoot my OCI - also a robust enough oil to handle a small amount of fuel dilution & Still have a good amount of lubrication properties.

SyN Disclaimer: Notice I didn't recommended you doing this I only shared my own thoughts!

You also can install a Fumoto drain valve in place of your OEM drain plug & pull a sample after 7K miles & send off for a UOA - just to get a idea of the condition of your oil & a another idea of how much further to push your OCI - if you pay a little extra for a TBN.

Your personal driving habits/style will dictate a lot to your OCI.
The simple guideline book has no idea how soft or hard or abusive you are on going to be on your 6.7L.