fact_checkQuick answer
2020 3.0 Duramax Oil Capacity
Most 2020 3.0 Duramax applications use 7 qt with a new oil filter. Check the table below to match your exact vehicle before filling.
With filter
7 qt
Recommended oil
dexosD diesel oil
Typical viscosity
0W-20
Oil Capacity by Year and Application
All numbers below are with a new oil filter.
YearsApplicationWith filterLitersRecommended oil
2020-2022Silverado 1500 / Sierra 1500 / Tahoe / Yukon with 3.0L Duramax LM27 qt6.6 LdexosD diesel oil
Start a little below the listed amount, then use the dipstick to top off. Check the owner manual if your vehicle has a different chassis, duty rating, or special package.
Common Questions
How many quarts does a 2020 3.0 Duramax take?
Most 2020 3.0 Duramax applications take 7 qt with a new oil filter. Match your exact vehicle row before filling.
Does the 2020 3.0 Duramax 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 2020 3.0 Duramax?
2020 3.0 Duramax applications commonly list 0W-20. Use the recommended oil shown for your matching application and confirm it in the owner manual.
Why might my 2020 3.0 Duramax 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.