Ram has the 2025 HD owners manual available for viewing on their resource website. You can view it here:
2025 Ram HD Owners Manual
One of the things I find very interesting is their change in the wording on the engine oil change recommendation for the Cummins. For 19-24 they have it as “change every 15k or sooner”. For 25, it’s now “should not exceed 15k or sooner”
Also take note that they’re recommended transmission fluid change interval for the new ZF Powerline 8 speed is 120,000 miles.
2025 Ram HD Owners Manual
One of the things I find very interesting is their change in the wording on the engine oil change recommendation for the Cummins. For 19-24 they have it as “change every 15k or sooner”. For 25, it’s now “should not exceed 15k or sooner”
Also take note that they’re recommended transmission fluid change interval for the new ZF Powerline 8 speed is 120,000 miles.