2003 5.9 Cummins Oil Capacity
Most 2003 5.9 Cummins applications use 12 qt with a new oil filter. Check the table below to match your exact vehicle before filling.
With filter
Recommended oil
Typical viscosity
Oil Capacity by Year and Application
All numbers below are with a new oil filter.
Common Questions
How many quarts does a 2003 5.9 Cummins take?
Most 2003 5.9 Cummins applications take 12 qt with a new oil filter. Match your exact vehicle row before filling.
Does the 2003 5.9 Cummins oil capacity include the filter?
Yes. The capacity shown here is the with-filter amount for a normal oil and filter change.
What oil should I use in a 2003 5.9 Cummins?
2003 5.9 Cummins applications commonly list 15W-40 normal service; 5W-40 synthetic for cold service. Use the recommended oil shown for your matching application and confirm it in the owner manual.
Why might my 2003 5.9 Cummins use a different amount?
A different chassis, oil pan, duty rating, or special package can change the published refill amount. Use the row that matches your vehicle.