Originally Posted By: SilverC6
Rotella is an excellent choice for the Cummins.
T3 15W-40 is perfect in sunny FL.
You should get 800,000 miles out of that engine/tranmission combination.
My 2013 manual says 15,000 miles, every 6 months, or when the light comes on.
800k with what type of driving? Mine will be used exclusively for work and will constantly be towing 10-25,000 pounds of... Whatever.
I hope to get a million outta the power unit before a serious rebuild is needed, so we'll see how she holds up.