About 5 quarts (roughly 4.7 liters) of engine oil are required for an oil change on the 2021 Buick Enclave with the 3.6 L V6, including the filter, using Dexos1 Gen 2 0W-20 under normal conditions.
This article explains the exact capacity, the recommended oil specification, and practical tips for ensuring a proper fill and maintenance for this vehicle.
Oil capacity and specification
Below are the key figures for the 3.6 L V6 used in the 2021 Enclave, along with the approved oil type.
- Oil capacity with filter: 5 quarts (4.7 L).
- Recommended oil type: Dexos1 Gen 2, viscosity 0W-20 (suitable for most climates).
- Note: If you use a different ambient temperature range or engine variant, confirm with the owner's manual or GM service data.
After pouring in the oil, always check the level with the dipstick and fill to the “Full” mark. If you are replacing the filter, plan to start with the full 5 quarts and add more only if the level is low after initial startup and settling.
Why the specification matters
Using the correct oil type (Dexos1 Gen 2 0W-20) helps engine performance, fuel efficiency, and the validity of warranty coverage. The Enclave's 3.6 L V6 is designed around this specification, and deviations can affect lubrication and emissions systems.
Summary
For the 2021 Buick Enclave with a 3.6 L V6, expect to replace about 5 quarts (4.7 L) of engine oil with a Dexos1 Gen 2 0W-20 grade, including the filter. Always verify exact capacity and requirements in the owner's manual or a GM service sheet, and fill to the dipstick’s full mark after a change.
What oil is recommended for a 2021 Buick Enclave?
So, what's the Buick Enclave oil type? What type of oil is recommended for the Buick Enclave by the experts? The Buick Enclave runs on synthetic oil with a grade of 5W-30. The service team at Buick Lakeland has some more important information about the Buick Enclave oil change in the guide below – check it out!
What year to stay away from Buick Enclave?
If you're going to avoid one Enclave SUV, make it the 2008 model. Although models very close to that year still have the same problems as the 2008 model, the 2008 Buick Enclave has pulled in more complaints and known issues than all other Buick Enclaves have.
How to make a Buick Enclave faster?
A Buick tuner chip can make your vehicle faster and more powerful. A performance chip is an easy and affordable way to increase the power and speed of your car. However, since these chips connect to your car's engine, they void your warranty.
How much oil does a 2021 Buick Enclave 3.6 take?
approximately 6 quarts
Maintenance Information. This kit is built specifically to fit: 2021 Buick Enclave 3.6L. Engine oil capacity is approximately 6 quarts. Oil Filter Installation Note: Lightly oil the gasket and hand-tighten.