verifiedOil capacity guide

L5P Duramax Oil Capacity by Year

Most Silverado HD and Sierra HD trucks with the L5P 6.6L Duramax use 10.0 qt with filter. Confirm that your truck is an L5P-era HD diesel before filling. Use the table and finder below to match the exact year and application before refilling.

Typical fill

10 qt

2017-2026

Range

10 qt

with filter

Recommended oil

dexosD / API CK-4 diesel oil where listed

check owner manual

Capacity Finder

Check your year and truck series

Oil capacity with filter

10qt9.5 L

GM heavy-duty diesel service tables commonly list 10.0 qt with filter for current 6.6L Duramax applications. Verify pickup versus commercial chassis differences before filling.

Oil Capacity by Year and Application

All numbers below are with a new oil filter.

2017-2026Silverado HD / Sierra HD with 6.6L Duramax L5P10 qt9.5 LdexosD / API CK-4 diesel oil where listed

Who This Covers

This page is for Silverado HD / Sierra HD with 6.6L Duramax L5P and similar vehicles using the same engine family. Before adding oil, match the exact year and application in the table below.

Why Your Number May Differ

L5P Duramax oil capacity is not always one fixed number. It can change by model year, vehicle setup, and oil-pan configuration, so use the row that matches your vehicle before refilling.

warningBefore You Fill
Add about 0.5 qt less than the listed capacity first, start the engine briefly, wait a few minutes, then verify with the dipstick and top off gradually. Do not rely on a generic engine answer if your vehicle is a different series, chassis-cab, medium-duty, or special-package configuration.

Common Questions

How many quarts does a L5P Duramax take?

L5P Duramax takes 10 qt with a new oil filter. For many applications, 10 qt is the starting point for 2017-2026 Silverado HD / Sierra HD with 6.6L Duramax L5P.

Does L5P Duramax oil capacity include the filter?

Yes. The capacity values on this page include a new oil filter, which is the number normally used during a full oil change.

What oil does a L5P Duramax use?

L5P Duramax commonly uses 15W-40 normal service; 5W-40 for cold service. Match the recommended oil shown for your exact row and confirm it against your owner manual or oil cap.

Why do L5P Duramax oil capacity numbers differ?

Oil capacity can change by model year, vehicle application, oil pan, emissions package, and whether the source is listing a with-filter service fill.

Browse by Year

2024 L5P Duramax Oil Capacityarrow_forward2022 L5P Duramax Oil Capacityarrow_forward2020 L5P Duramax Oil Capacityarrow_forward2017 L5P Duramax Oil Capacityarrow_forward

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Based on GM heavy-duty Duramax owner-manual capacity tables and Chevrolet commercial diesel owner-manual service-fill tables.. Check your owner manual before service to confirm the exact vehicle setup.