Joe T

Cummins says go 15K on oil changes if you're not using CG-4 oil... You have 3 options and even though I'd rather not go with CG-4 to increase my intervals I've read to not use the new oil for the emissions diesels since they don't lube right.

http://www.everytime.cummins.com/eve...aintenance.jsp

So which is it CI-4, CH-4 or CG-4 that is the new oil they have to use on the 07.5+ trucks?

bluechrome

mobil delvac 1 fully synthetic the best oil in my opinion. Amsoil is also really good

MikeyB

I would go with CI. Doubt you can find CG or CH on the shelves at most places.
Or you can use the new CJ oils.

MikeyB

Joe T

CI it is then. Why does cummins say reduce your intervals if using CG oils? I'm assuming that is the new oil and doesn't lube properly.

MikeyB, CJ isn't an option on that link I posted above.

MikeyB

CJ+4 is the new oil required on the new '07 emissions equipped engines.

MikeyB